A、require no lubrication under normal operating conditions
B、compensate for gross misalignment in the drive train
C、are able to transmit high torque ,even where slight misalignment exists
D、will rapidly disconnect the engine from the line shaft
更多“Gear-type flexible couplings are often used in diesel engine drive trains because they（）”相关的问题
A、negative displacement type B、turbine type C、positive displacement type D、mixed-flow type
A、her gear extends more than 100 meters from the vessel B、she is using any type of gear，other than lines C、she is using fishing apparatus which restricts her maneuverability D、she has any fishing gear on board
A、underway B、using gear which extends more than 50 meters outboard C、using a seine of some type D、using gear which restricts her maneuverability
A、A.underway B、B.using gear which extends more than 50 meters outboard C、C.using a seine of some type D、D.using gear which restricts her maneuverability
A、Cranes are more difficult to secure for sea B、The spotting area of the conventional gear is larger C、A crane operator requires more training than the winch operator of a yard and stay rig D、The yard and stay rig is more flexible in its ability to handle a wider variety of cargoes
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