无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

單項選擇題

A generator is prevented from becoming motorized by the use of a/an （）.

A.over-speed trip
B.reverse power relay
C.back pressure trip
D.governor controls

你可能感興趣的試題

單項選擇題

Which of the electrical properties listed will always be the same for each component in a parallel circuit?（）

A.Impedance
B.Current
C.Resistance
D.Voltage

單項選擇題

A switchboard, for a AC electrical distribution system, will be provided with which of the following components （）.

A.Frequency meter
B.Ammeter
C.Voltmeter
D.All of the above

<dl id="wmkpz"></dl>

<pre id="wmkpz"><strong id="wmkpz"></strong></pre>