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【单选题】
电容器是一种常用的电子元件，对电容器认识正确的是（ ）A.
电容器的电容表示其储存电荷的能力
B.
电容器的电容与它所带电荷量成正比
C.
电容器的电容与它两极板间的电压成正比
D.
电容的常用单位有μF和pF，1μF＝1000 pF
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【单选题】Based on the discussion, on the 'steeping stones', what does the 'stone' refer to?
A.
The stones in desert.
B.
The flyways for pollinators.
C.
Patches of plants.
D.
Collects of flowering plants.
【单选题】What does the author mean by saying 'the 21st century equivalent of being caught naked'?
A.
People's personal information is easily accessed without their knowledge.
B.
In the 21st century people try every means to look into others' secrets.
C.
People tend to be more frank with each other in the information age.
D.
Criminals are easily caught on the spot with advanced technology.
【单选题】What are the EPIRB lanyards to be used?
A.
Attach to the ship to prevent the EPIRB floating free.
B.
To be used by survivors for securing theEPIRB to a survival craft or.person in water.
C.
Avoid the EPIRB transmitting alert accidentally.
D.
To be used to combine the EPIRB with the SART.
【单选题】What does the author mean by saying 'the 21st century equivalent of being caught naked'? 查看材料
A.
People's personal information is easily accessed without their knowledge.
B.
In the 21st century people try every means to look into others' secrets.
C.
People tend to be more frank with each other in the information age.
D.
Criminals are easily caught on the spot with advanced technology.
【单选题】What does the author mean by saying 'the 21st century equivalent of being caught naked'(Lines 3-4, Para. 2)?
A.
People's personal information is easily accessed without their knowledge.
B.
In the 21st century people try every means to look into others' secrets.
C.
People tend to be more frank with each other in fhe information age.
D.
Criminals are easily caught on the spot with advanced technology.
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