A、power
B、efficiency
C、effective power
D、power factor
更多“The （） is a measure of the phase difference between voltage and current and is expected as the cosine of phase angle.”相关的问题
A、used to measure the speed of wind B、in which the pressure of the air is measured C、that tells which direction a storm is coming from D、used to measure the height of waves
A、used to measure the speed of wind B、in which the pressure of air is measured C、that tells which dirction a storm is coming from D、used to measure the height of waves
A、sufficient quantity； measured B、measured quantity；sufficient C、excessive quantity；sufficient D、the less quantity the better；the more the better
A、measured from due south clockwise 180° B、measured from due south counterclockwise 180° C、to the left of the storm's track D、ahead of the typhoon measured from the storm's track to 90°on each side
A、of the wave's crest B、of the wave's trough C、measured from crest to trough D、measured from crest to crest
A、laying a straight edge across the crank webs at the crankpin and measuring the distance to the crankpin in two places B、measuring the crank drop on either side of each crank throw while the crankshaft is slowly rotated through one revolution C、rotating the crankshaft through one revolution, pausing each 90oof rotation to measure bearing clearances, top and bottom D、taking micrometer reading between the crank cheeks opposite the crankpin every 90°of crank angle rotation
A、A safety line attached to a man working over the side B、Used to measure water depth C、Used to slow the headway of a barge D、Used to measure the overhead height of a bridge
A、a safety line attached to a man working over the side B、used to measure water depth C、used to slow the headway of a barge D、used to measure the overhead height of a bridge
A、a safety line attached to a man working over the side B、used to measure water depth C、used to slow the headway of a barge D、used to measure the overhead height of a bridge
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