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【单选题】
对于公式E=U/d的说法中正确的是( )A.
它适用于任何电场
B.
在电场中，场强的数值等于每单位距离上降低的电势
C.
场强的另一单位伏/米，适用于任何电场
D.
只要测出两点的电势差和两点的间距，即可算出电场强度
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举一反三
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A.
accelerate
B.
advantageous
C.
overtaken
D.
displace
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A.
Second engineer officer
B.
Chief officer
C.
D.
Chief engineer officer
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A.
B.
chief officer
C.
chief engineer officer
D.
second engineer officer
【单选题】when determining the needs of the intended voyage, the chief engineer will consulted with _____, taking into consideration the requirement for fuel, water, lubricants, chemicals and...
A.
chief officer
B.
second engineer officer
C.
D.
chief engineer officer
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4
B.
5
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D.
7
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