Tools with ()handles should be used to check electric circuit.
A、plastic
B、metal
C、stainless steel
D、copper
A、plastic
B、metal
C、stainless steel
D、copper
A、Securing equipment against slipping or drifting B、Operating machinery at its recommended speed C、Repairing loose handles on tools before using D、Using tools for purpose for which they are not designed
A、cargo handling machines B、deck winches and derricks C、engine-room tools D、course controlling system
A、Special tools are required for lapping or grinding B、It is impossible to throttle flow with a butterfly valve C、To close the valve, it is only necessary to turn the handle a quarter of a turn D、The butterfly valve should never be used in a freshwater system
A、A.cargo handling machines B、B.deck winches and derricks C、C.engine-room tools D、D.course controlling system