A、normal operation
B、a dirty commutator
C、increased brush capacity
D、water vapor absorption
更多“Sparking at the brushes of a running motor could be an indication of （）.”相关的问题
A、sparking being taking place B、to spark taking place C、sparking to be taken place D、sparking taking place
A、at current price at the nearest main bunkering port B、at current price at the port of redelivery if it is not available to obtain the current price at the nearest main bunkering port C、at current price at the nearest main bunkering port if it is cheaper than that at the port of redelivery D、at current price at the port of redelivery if it is obtainable，even the price is higher at the nearest main bunkering port
A、A.at the sole risk and expense of the Carrier B、B.at the sole risk and expense of the Merchant C、C.at the sole risk of the Merchant but at the expense of the Carrier D、D.at the sole risk of the Carrier but at the expense of the Merchant
A、At the beginning of the compression stroke B、At the beginning of the suction stroke C、At the end of the working stroke D、At the end of the exhaust stroke
A、male coupling at both ends B、female coupling at both ends C、female coupling at the nozzle end and a male coupling at the hydrant end D、male coupling at the nozzle end and a female coupling at the hydrant end
A、at one fourth the demurrage rate B、at one third the demurrage rate C、at half the demurrage rate D、at the demurrage rate
A、reciprocating at the piston pin, rotary at the crank pin B、reciprocating at the crank pin, rotary at the piston pin C、straight reciprocation D、straight rotation
A、The righting arms at various angles of inclination and displacement B、The metacentric height at large angles of heel C、The height of the center of buoyancy at various angles D、The metacentric radius at various displacements
A、The righting arms at various angles of inclination and displacement B、The metacentric height at large angle of heel C、The height of the center of buoyancy at various angles D、The metacentric radius at various angles
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