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【单选题】
下列哪种运输方式的灵活性最好 。
A.
铁路运输
B.
航空运输
C.
管道运输
D.
公路运输
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【单选题】运算放大器电路如图所示,输入电压 u i = 2V ,则输出电压 u O 等于 ( ) 。
A.
2V
B.
正饱和值
C.
负饱和值
D.
-2V
查看完整题目与答案
【单选题】同相比例运算放大器电路如图所示,输入u i 为有效电压为1V,R1和RF电阻分别为10KΩ和30KΩ,则输出的有效电压为( )V
A.
1
B.
3
C.
4
D.
5
查看完整题目与答案
【单选题】使用SQL命令不能创建的对象是( )。
A.
数据表
B.
窗体
C.
选择查询
D.
操作查询
查看完整题目与答案
【单选题】运算放大器电路如图所示 , 输入电压 u i = 2V , 则输出电压 u O 等于 ( ) 。
A.
2V
B.
正饱和值
C.
负饱和值
查看完整题目与答案
【单选题】运算放大器电路如图所示，输入电压U i =2V，则输出电压U o 等于（）
A.
2V
B.
正饱和值
C.
负饱和值
D.
-2V
查看完整题目与答案
【单选题】运算放大器应用电路如图所示，在运算放大器线性工作区，输出电压与输入电压之间的运算关系是( )。
A.
uo=10（u1-u2）
B.
uo=10（u2-u1）
C.
uo=-10u1+11u2
D.
uo=10u1-11u2
查看完整题目与答案
【单选题】听力原文：W: I really like these gloves. They look good as a gift for my niece, but I'm afraid they will not fit. M: Don't worry. It says one size fits all. Q: What is this woman worried about? (17)
A.
Her niece will think these gloves are old-fashioned.
B.
Her niece might not like these gloves.
C.
These gloves might not be her niece's size.
D.
These gloves are the wrong colour.
查看完整题目与答案
【简答题】—I’m sorry I didn’t bring the book here. —Oh, ____. Bring it next time, OK? A．you’d better not B．I’m afraid not C．as you wish D．that’s all right
查看完整题目与答案
【单选题】听力原文：M: I think the logic course is very interesting, but it's very difficult. I'm afraid I can't get through the reading list. W: Don't worry, you'll find the time somehow. Why is the man worded?
A.
He has failed in the logic examination.
B.
He must read a lot of books set by his logic teacher.
C.
He can't get the books he needs.
D.
He is lagging behind his classmates in studies.
查看完整题目与答案
【单选题】—Could you finish the task in three days? — _____.  I have something else to do these days. [     ]
A.
  I'm afraid so
B.
  I'm afraid not
C.
  Yes, I think so
D.
  I hope it
查看完整题目与答案
相关题目：
【单选题】运算放大器电路如图所示,输入电压 u i = 2V ,则输出电压 u O 等于 ( ) 。
A.
2V
B.
正饱和值
C.
负饱和值
D.
-2V
查看完整题目与答案
【单选题】同相比例运算放大器电路如图所示,输入u i 为有效电压为1V,R1和RF电阻分别为10KΩ和30KΩ,则输出的有效电压为( )V
A.
1
B.
3
C.
4
D.
5
查看完整题目与答案
【单选题】使用SQL命令不能创建的对象是( )。
A.
数据表
B.
窗体
C.
选择查询
D.
操作查询
查看完整题目与答案
【单选题】运算放大器电路如图所示 , 输入电压 u i = 2V , 则输出电压 u O 等于 ( ) 。
A.
2V
B.
正饱和值
C.
负饱和值
查看完整题目与答案
【单选题】运算放大器电路如图所示，输入电压U i =2V，则输出电压U o 等于（）
A.
2V
B.
正饱和值
C.
负饱和值
D.
-2V
查看完整题目与答案
【单选题】运算放大器应用电路如图所示，在运算放大器线性工作区，输出电压与输入电压之间的运算关系是( )。
A.
uo=10（u1-u2）
B.
uo=10（u2-u1）
C.
uo=-10u1+11u2
D.
uo=10u1-11u2
查看完整题目与答案
【单选题】听力原文：W: I really like these gloves. They look good as a gift for my niece, but I'm afraid they will not fit. M: Don't worry. It says one size fits all. Q: What is this woman worried about? (17)
A.
Her niece will think these gloves are old-fashioned.
B.
Her niece might not like these gloves.
C.
These gloves might not be her niece's size.
D.
These gloves are the wrong colour.
查看完整题目与答案
【简答题】—I’m sorry I didn’t bring the book here. —Oh, ____. Bring it next time, OK? A．you’d better not B．I’m afraid not C．as you wish D．that’s all right
查看完整题目与答案
【单选题】听力原文：M: I think the logic course is very interesting, but it's very difficult. I'm afraid I can't get through the reading list. W: Don't worry, you'll find the time somehow. Why is the man worded?
A.
He has failed in the logic examination.
B.
He must read a lot of books set by his logic teacher.
C.
He can't get the books he needs.
D.
He is lagging behind his classmates in studies.
查看完整题目与答案
【单选题】—Could you finish the task in three days? — _____.  I have something else to do these days. [     ]
A.
  I'm afraid so
B.
  I'm afraid not
C.
  Yes, I think so
D.
  I hope it
查看完整题目与答案