單項(xiàng)選擇題

（）is electricity that is flowing where it’s not supposed to through water, fittings on your boat, wet wood, damp surfaces, etc.

A.Stray current
B.Rated current
C.Starting current
D.Earth current

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單項(xiàng)選擇題

During steering gear test should be moved through its full travel in both directions（）

A.pump
B.the cylinder
C.the hunting gear
D.the rudder

單項(xiàng)選擇題

The（） of the telemotor is mounted on the steering gear.

A.transmitter
B.receiver
C.pipes
D.charging unit