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【单选题】
热电堆是基于什么效应来实现电磁辐射的测量？（ ）A.
温差电动势
B.
热
C.
光电导
D.
光电子发射
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反馈参考答案：
举一反三
【多选题】形成流体动力润滑的必要条件有:
A.
供油充足，润滑油有适当的粘度
B.
两摩擦面有足够的相对运动速度
C.
两表面间形成楔形空间，在相对运动中，润滑油从大口流向小口
D.
以上都不对
【单选题】Traditional Chinese doctors believe it's important _____ a balanced diet. [ ]
A.
to eat
B.
eating
C.
eat
D.
ate
【简答题】They said goodbye to him as he got a_____ the train at Union Station.
【单选题】如图，一次函数y=kx+b的图象与反比例函数y= 的图象交于A，B两点．当一次函数的值大于反比例函数的值时，自变量x的取值范围是 [ ]
A.
﹣2
B.
0
C.
x
D.
﹣2 1
【多选题】形成流体动力润滑的必要条件是（ ）。
A.
两摩擦表面形成楔形空间
B.
充分供应具有一定粘度的润滑油
C.
具有一定的相对滑动速度，且相对运动方向是由大端指向小端
D.
润滑油温度不超过50℃
【简答题】什么是接受,构成一项有效接收应当具备什么条件?
【单选题】It's very important to eat a _____ diet. [ ]
A.
balance
B.
balances
C.
balancing
D.
balanced
【简答题】什么是接受,构成一项有效接收应当具备什么条件?
【多选题】Situation: Jim asked Magid to come into his home. They talked about what they had been doing since Magid left the company. Magid stayed about three hours and then said, "I'd better go now." Jim got up...
A.
Jim thought that Magid should have stayed longer. Three hours was too short for a visit.
B.
Jim thought that Magid should have apologized for visiting without calling first.
C.
Jim thought that Magid had stayed too long and that he should have said something like,“I'm sorry if I've disturbed."
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