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【判断题】
场效应管和三极管均有多子和两种载流子参与导电；场效应管和晶体管的温度稳定性和抗辐射能力相差不大。
A.
正确
B.
错误
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举一反三
【单选题】I am sure David will be able to find the library, he has a pretty good ______ of direction. [      ]
A.
idea
B.
feeling
C.
experience
D.
sense
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【判断题】PC使用的硬盘接口电路主要是IDE(E-IDE)。(    )
A.
正确
B.
错误
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【单选题】超声波换能器安装于容器上方，超声波发射到液面，又从液面发射到换能器的时间为t，超声波传播的速度为c，容器的高度为H，则容器内液位的高度为（ ）。
A.
ct
B.
H-ct
C.
H-ct/2
D.
H-ct/4
查看完整题目与答案
【单选题】超声波换能器安装于容器上方，超声波发射到液面，又从液面发射到换能器的时间为t，超声波传播的速度为c，那么换能器与液面间的高度h为（ ）。
A.
2ct
B.
ct
C.
ct/2
D.
ct/4
查看完整题目与答案
【单选题】– Why don’t we go to the theater this evening? -- ______________.
A.
I think so.
B.
Good idea!
C.
I agree with you.
D.
It’s fine.
查看完整题目与答案
【单选题】Mr. Smith was thinking about how to explain to the manager why he was late for work, when a good idea ______ to him.
A.
happened
B.
brought
C.
occurred
D.
struck
查看完整题目与答案
【简答题】超声换能器安装于容器上方，超声波发射到液面， 又从液面反射到换能器的时间为 t ，超声波传播的速度为 c,容器的高度是H， 计算容器内液位高度 。
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【判断题】学前儿童的脉搏易受到各种内外因素的影响,因此,必须在学前儿童安静时测量脉搏。测量脉搏时,我们会发现学前儿童每分钟的心跳比成人快。
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文：M: You call Henry a dreamer，but I think he's got a lot of good ideas． W: Good ideas are only useful if you make something out of them． Q: What does the woman think about Henry? (19)
A.
He has too many dreams.
B.
He just likes to sleep.
C.
He doesn't put his ideas into practice.
D.
He doesn't have many good ideas.
查看完整题目与答案
【单选题】听力原文：M: You call Henry a dreamer, but I think he's got a lot of good ideas. W: Good ideas are only useful if you make something out of them. Q: Why does the woman think that Henry is a dreamer? (19)
A.
He has too many dreams.
B.
He likes to sleep.
C.
He doesn't put his ideas into practice.
D.
He doesn't have many ideas.
查看完整题目与答案
相关题目：
【单选题】I am sure David will be able to find the library, he has a pretty good ______ of direction. [      ]
A.
idea
B.
feeling
C.
experience
D.
sense
查看完整题目与答案
【判断题】PC使用的硬盘接口电路主要是IDE(E-IDE)。(    )
A.
正确
B.
错误
查看完整题目与答案
【单选题】超声波换能器安装于容器上方，超声波发射到液面，又从液面发射到换能器的时间为t，超声波传播的速度为c，容器的高度为H，则容器内液位的高度为（ ）。
A.
ct
B.
H-ct
C.
H-ct/2
D.
H-ct/4
查看完整题目与答案
【单选题】超声波换能器安装于容器上方，超声波发射到液面，又从液面发射到换能器的时间为t，超声波传播的速度为c，那么换能器与液面间的高度h为（ ）。
A.
2ct
B.
ct
C.
ct/2
D.
ct/4
查看完整题目与答案
【单选题】– Why don’t we go to the theater this evening? -- ______________.
A.
I think so.
B.
Good idea!
C.
I agree with you.
D.
It’s fine.
查看完整题目与答案
【单选题】Mr. Smith was thinking about how to explain to the manager why he was late for work, when a good idea ______ to him.
A.
happened
B.
brought
C.
occurred
D.
struck
查看完整题目与答案
【简答题】超声换能器安装于容器上方，超声波发射到液面， 又从液面反射到换能器的时间为 t ，超声波传播的速度为 c,容器的高度是H， 计算容器内液位高度 。
查看完整题目与答案
【判断题】学前儿童的脉搏易受到各种内外因素的影响,因此,必须在学前儿童安静时测量脉搏。测量脉搏时,我们会发现学前儿童每分钟的心跳比成人快。
A.
正确
B.
错误
查看完整题目与答案
【单选题】听力原文：M: You call Henry a dreamer，but I think he's got a lot of good ideas． W: Good ideas are only useful if you make something out of them． Q: What does the woman think about Henry? (19)
A.
He has too many dreams.
B.
He just likes to sleep.
C.
He doesn't put his ideas into practice.
D.
He doesn't have many good ideas.
查看完整题目与答案
【单选题】听力原文：M: You call Henry a dreamer, but I think he's got a lot of good ideas. W: Good ideas are only useful if you make something out of them. Q: Why does the woman think that Henry is a dreamer? (19)
A.
He has too many dreams.
B.
He likes to sleep.
C.
He doesn't put his ideas into practice.
D.
He doesn't have many ideas.
查看完整题目与答案