随机作业，答案
一、单选题:【15道,总分:0分】
1.[单选题]<img width="326" height="31" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/422bb776-a7a6-43ae-830d-c0e7dd8bbdf8/2017111141753544.jpg" />
A.a=0,b=0
B.<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">互为倒数</span>
C.<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">互为相反数</span>
正确答案:——A——
2.[单选题]<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">下列函数在定义域上是增函数的是（ ）</span>
A.y=|x|
B.y=x<sup>2</sup>
C.y=x<sup>3</sup>
正确答案:——C——
3.[单选题]<img width="404" height="31" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/f9293b5c-ffd7-4e8f-9aa7-3d3eb6223ec2/201711114313149.jpg" />
A.<img width="125" height="58" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/f9293b5c-ffd7-4e8f-9aa7-3d3eb6223ec2/2017111143144825.jpg" />
B.<img width="166" height="63" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/f9293b5c-ffd7-4e8f-9aa7-3d3eb6223ec2/2017111143153639.jpg" />
C.<img width="109" height="58" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/f9293b5c-ffd7-4e8f-9aa7-3d3eb6223ec2/20171111432216.jpg" />
正确答案:——A——
4.[单选题]<img width="509" height="32" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/59d70ae1-6db0-4e75-8c32-160c33496e5d/20171111432732.jpg" />
A.<img width="31" height="58" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/59d70ae1-6db0-4e75-8c32-160c33496e5d/201711114314464.jpg" />
B.<img width="27" height="67" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/59d70ae1-6db0-4e75-8c32-160c33496e5d/201711114325681.jpg" />
C.<img width="59" height="58" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/59d70ae1-6db0-4e75-8c32-160c33496e5d/201711114332889.jpg" />
正确答案:————
5.[单选题]<img width="287" height="35" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/f25bf6ca-9046-4f3b-a2e4-81ca0c4ea6d2/201711115549567.jpg" />
A.<img width="131" height="23" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/f25bf6ca-9046-4f3b-a2e4-81ca0c4ea6d2/20171111562421.jpg" />
B.<img width="155" height="32" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/f25bf6ca-9046-4f3b-a2e4-81ca0c4ea6d2/201711115610908.jpg" />
C.<img width="162" height="27" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/f25bf6ca-9046-4f3b-a2e4-81ca0c4ea6d2/201711115619364.jpg" />
正确答案:————
6.[单选题]<span style="font-size: 12pt; font-family: 宋体; color: black; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold; mso-bidi-font-size: 10.5pt">下列方程为圆的方程的是（ ）</span>
A.x<sup>2</sup>+y<sup>2</sup>=1
B.2x<sup>2</sup>+y=1
C.2x<sup>2</sup>-y<sup>2</sup>=1
正确答案:————
7.[单选题]log<sub>2</sub>16=（ ）
A.4
B.3
C.8
正确答案:————
8.[单选题]<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">下列式子中，正确的是（ ）</span>
A.a<sup>3</sup>+a<sup>3</sup>=a<sup>6</sup>
B.(a<sup>3</sup>)<sup>2</sup>=a<sup>6</sup>
C.a<sup>3</sup>a<sup>2</sup>=a<sup>6</sup>
正确答案:————
9.[单选题]<img style="height: 34px; width: 515px" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/05159e45-b393-4847-8690-8e30c29b662a/2017111144718636.jpg" />
A.1
B.2
C.3
正确答案:————
10.[单选题]<img width="215" height="43" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/3f1537d7-a71a-4858-ba56-1d6aab21a985/201711114111503.jpg" />
A.3
B.-3
C.<img width="38" height="36" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/3f1537d7-a71a-4858-ba56-1d6aab21a985/2017111141117260.jpg" />
正确答案:————
11.[单选题]<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">若二次函数y=ax<sup>2</sup>+2x+1(a≠0)</span><span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">的图像开口向上，则a</span><span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">满足下列哪个条件（ ）</span>
A.a＜0
B.a＞0
C.<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">a取除</span><span lang="EN-US" style="font-size: 10.5pt; font-family: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold; mso-fareast-font-family: 宋体">0</span><span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">外的任意实数都行</span>
正确答案:————
12.[单选题]<img width="257" height="32" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/fadae5f1-f049-4d2a-84d8-fdeda092e58d/20171111452051.jpg" />
A.<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">充分条件</span>
B.<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">必要条件</span>
C.<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">充分必要条件</span>
正确答案:————
13.[单选题]<img width="377" height="35" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/590ed78d-1cd8-40dc-bd89-d3f66111feb1/2017111144549791.jpg" />
A.<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">单调递增</span>
B.<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">先单调递增，后单调递减</span>
C.<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">单调递减</span>
正确答案:————
14.[单选题]<img width="444" height="34" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/6700f788-fa43-42c4-8a33-60c325ff523b/201711114023997.jpg" />
A.｛1,4｝
B.{2,5,6}
C.{1,2,4,5,6}
正确答案:————
15.[单选题]<img width="440" height="59" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/fa376f36-4e17-4e33-b6c4-f2c8d3c12658/2017111142713796.jpg" />
A.0
B.1
C.2
正确答案:————
二、判断题:【5道,总分:0分】
1.[判断题]<img width="123" height="55" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/a30e4d28-321d-4a3a-8d40-d4182cb27574/2017111152123685.jpg" />
A.√
B.×
正确答案:——T——
2.[判断题]<img width="83" height="34" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/e98eeb91-d8cf-4bbd-94e5-ead326de0a33/2017111151932874.jpg" />
A.√
B.×
正确答案:——F——
3.[判断题]<span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">二次函数与一次函数至多有</span><span lang="EN-US" style="font-size: 10.5pt; font-family: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold; mso-fareast-font-family: 宋体">2</span><span style="font-size: 10.5pt; font-family: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">个交点</span><span lang="EN-US" style="font-size: 10.5pt; font-family: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold; mso-fareast-font-family: 宋体">.</span>
A.√
B.×
正确答案:——T——
4.[判断题]<img width="205" height="36" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/d51aa505-3f28-45b6-9636-54cf6c18cb65/2017111152028444.jpg" />
A.√
B.×
正确答案:————
5.[判断题]<img width="74" height="36" alt="" src="/Attachment/Attachment/Itembank/QuestionAttachments/201711/3ee67e80-8cde-4ff0-82d7-7adb135297b6/2017111152157866.jpg" />
A.√
B.×
正确答案:————
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