皮皮学，免费搜题
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搜题
【单选题】
把一个带正电的导体B靠近一个不带电的绝缘导体A时, 导体A的电势将A.
升高
B.
降低
C.
不变
D.
变化与否不能确定
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The route of transmission of measles is
A.
blood transmission
B.
digestive tract transmission
C.
transmission of airborne droplets
D.
transmission by skin contact
E.
insect-borne transmission
【简答题】电压继电器有过电压和欠电压两种。一般都采用电磁式，与电流继电器不同之处在于，电压继电器的（）且（）。
【单选题】Which of the following transmission line can be considered as a medium transmission line?
A.
Transmission line of length up to 600 km
B.
Transmission line of length up to 500 km
C.
Transmission line of length up to 200 km
D.
Transmission line of length up to 80 km
【简答题】Both mother-to-child transmission and partner-to-partner transmission can be pred or protected effectively by drugs for ______.
【简答题】过电压有( )和( )两种。
【多选题】What are the transmission routes of NCP?
A.
contact transmission
B.
droplet transmission
C.
fecal-oral transmission
【简答题】传播途径(route of transmission)
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