A、A.draw a one line diagram of the circuitry
B、B.test all fuses and measure the line voltage
C、C.take megger readings
D、D.insulate the apparatus from ground
更多“As a general rule, the first troubleshooting action to be taken in checking faulty electric control devices is to （）.”相关的问题
A、apply the relevant Steering and Sailing Rules as a power-driven vessel B、apply the relevant Steering and Sailing Rules as a Sailing vessel C、apply the relevant Steering and Sailing Rules as a vessel not under command D、apply the relevant Steering and Sailing Rules as a vessel engaged in a towing operation
A、not be regarded as a vessel B、in general，keep well clear of all vessels C、proceed at a slower speed than surrounding vessels D、when making way，show the lights for a vessel not under command
A、draw a one line diagram of the circuitry B、test all fuses and measure the line voltage C、take megger readings D、insulate the apparatus from ground
A、through some exceptional circumstance is unable to maneuver as required by the Rules B、from the nature of her work is unable to maneuver as required by the Rules C、due to adverse weather conditions is unable to maneuver as required by the Rules D、has lost steering and is unable to maneuver
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