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【单选题】
已知x，y，z∈R，若-1，x，y，z，-3成等比数列，则xyz的值为（　　）
A.
-3
B.
±3
C.
-3 3
D.
±3 3
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参考答案：
举一反三
【单选题】下面网络互联设备中,工作在物理层的设备是
A.
网桥
B.
交换机
C.
集线器
D.
路由器
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【多选题】下面说法正确的有( )。
A.
工作在物理层的互联设备有中继器
B.
工作在网络层的互联设备有交换机
C.
工作在数据链路层的互联设备有网桥
D.
工作在高层的互联设备是网关
查看完整题目与答案
【单选题】Questions 下列各 ·Read the article below about service production and the questions on the opposite page． ·For each question(13-18)，mark one letter(A。B，C，or D)on your Answer Sheet． Service are not purcha...
A.
Services are ordered by the customer.
B.
Service retailing is separated from goods retailing.
C.
The retailer produces and sells services.
D.
The retailer manufactures products as well.
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【简答题】不等式3-2x﹤1的解集是
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【单选题】&8226;Read this introduction to an article about an approach to management. &8226;Choose the best sentence from the opposite page to fill each of the gaps. &8226;For each gap (9-14), mark one letter (...
A.
However, direct personal contact is more typically needed to effectively transfer the kind of knowledge that must be creatively applied to particular business problems or opportunities.
B.
For that, companies really have to bring people together to brainstorm.
C.
Many companies have tried, with mixed success, to leverage this underused asset by centralising knowledge management functions or by investing heavily in knowledge management technology.
D.
The entire history of the T-shaped manager is one of evolution, a process that continues to this day.
E.
The successful T-shaped manager must learn to live with, and ultimately thriv
查看完整题目与答案
【单选题】在建筑系统中,大多数的闭环控制回路采用( )。
A.
双位控制
B.
比例积分控制
C.
比例微分控制
D.
比例积分微分控制
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【单选题】不等式组 -3x＞5 x-1＞2 的解集的情况是（　　）
A.
解集是 x＜- 3 5
B.
解集是x＜ - 5 3
C.
解集是x＞3
D.
不等式组没有解
查看完整题目与答案
【单选题】I haven’t got time to finish it, but ________________to get the main idea. a. I’ve read enough the article b. c.
A.
I’ve read enough the article
B.
I’ve read enough of the article
C.
I’ve read the article enough
查看完整题目与答案
【单选题】马克思关于人和自然关系的论述发展形成了西方马克思主义中的哪个流派?()
A.
关系学马克思主义
B.
环境学马克思主义
C.
人类新马克思主义
D.
生态学马克思主义
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【判断题】展示设计中考虑人体尺寸数据时，一般会有第10百分位、第50百分位和第90百分位三种状态，但设计中最常用的是第10和第90百分位。
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】下面网络互联设备中,工作在物理层的设备是
A.
网桥
B.
交换机
C.
集线器
D.
路由器
查看完整题目与答案
【多选题】下面说法正确的有( )。
A.
工作在物理层的互联设备有中继器
B.
工作在网络层的互联设备有交换机
C.
工作在数据链路层的互联设备有网桥
D.
工作在高层的互联设备是网关
查看完整题目与答案
【单选题】Questions 下列各 ·Read the article below about service production and the questions on the opposite page． ·For each question(13-18)，mark one letter(A。B，C，or D)on your Answer Sheet． Service are not purcha...
A.
Services are ordered by the customer.
B.
Service retailing is separated from goods retailing.
C.
The retailer produces and sells services.
D.
The retailer manufactures products as well.
查看完整题目与答案
【简答题】不等式3-2x﹤1的解集是
查看完整题目与答案
【单选题】&8226;Read this introduction to an article about an approach to management. &8226;Choose the best sentence from the opposite page to fill each of the gaps. &8226;For each gap (9-14), mark one letter (...
A.
However, direct personal contact is more typically needed to effectively transfer the kind of knowledge that must be creatively applied to particular business problems or opportunities.
B.
For that, companies really have to bring people together to brainstorm.
C.
Many companies have tried, with mixed success, to leverage this underused asset by centralising knowledge management functions or by investing heavily in knowledge management technology.
D.
The entire history of the T-shaped manager is one of evolution, a process that continues to this day.
E.
The successful T-shaped manager must learn to live with, and ultimately thriv
查看完整题目与答案
【单选题】在建筑系统中,大多数的闭环控制回路采用( )。
A.
双位控制
B.
比例积分控制
C.
比例微分控制
D.
比例积分微分控制
查看完整题目与答案
【单选题】不等式组 -3x＞5 x-1＞2 的解集的情况是（　　）
A.
解集是 x＜- 3 5
B.
解集是x＜ - 5 3
C.
解集是x＞3
D.
不等式组没有解
查看完整题目与答案
【单选题】I haven’t got time to finish it, but ________________to get the main idea. a. I’ve read enough the article b. c.
A.
I’ve read enough the article
B.
I’ve read enough of the article
C.
I’ve read the article enough
查看完整题目与答案
【单选题】马克思关于人和自然关系的论述发展形成了西方马克思主义中的哪个流派?()
A.
关系学马克思主义
B.
环境学马克思主义
C.
人类新马克思主义
D.
生态学马克思主义
查看完整题目与答案
【判断题】展示设计中考虑人体尺寸数据时，一般会有第10百分位、第50百分位和第90百分位三种状态，但设计中最常用的是第10和第90百分位。
A.
正确
B.
错误
查看完整题目与答案
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