單項(xiàng)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
您可能感興趣的試卷
你可能感興趣的試題
1.單項(xiàng)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
2.單項(xiàng)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
最新試題
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
題型：?jiǎn)雾?xiàng)選擇題
The treatment of the fuel oils involves storage, heating, filtering and（）
題型：?jiǎn)雾?xiàng)選擇題
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
題型：?jiǎn)雾?xiàng)選擇題
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
題型：?jiǎn)雾?xiàng)選擇題
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
題型：?jiǎn)雾?xiàng)選擇題