The alternating current generator supplying a load has a voltage drop resulted from the loadWhen the load has a lagging power factor this voltage drop _____.
A.is small
B.may be neglected
C.is useful
D.is considerable

两种()混合出来的颜色被成为间色

A.复色
B.杂色
C.原色
D.浊色

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The fog produced by warm moist air passing over a cold surface is called ().A.conduction fogB.radiation fogC.frontal fogD.advection fog

A.
A.conduction
B.radiation
C.frontal
D.advection

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