A、A.upwards；top
B、B.upwards；bottom
C、C.downwards；top
D、D.downwards；bottom
更多“The load on the crosshead pin is always （）, so it is the （）half of the bearing which is subject to wear.”相关的问题
A、A.The line over the summer load waterline B、B.The line above the tropical load waterline C、C.The line below the tropical load waterline D、D.The line between the summer and the winter north Atlantic load waterline
A、only when the load is taken off the cable B、only when there is a load on the cable C、only when activated by the controls at the lowering station D、at any time
A、only when the load is taken off the cable B、only when there is a load on the cable C、only when activated by the controls at the lowering station D、at any time
A、only when the load is taken off the cable B、only when there is a load on the cable C、only when activated by the controls at the lowering station D、at any time
A、loaded more on the port side forward B、loaded equally on both sides with more forward C、loaded equally on both sides with more aft D、allowed to sit anywhere
A、<load-on-startup><load-on-startup> <load-on-startup/> B、 <load-on-startup>1</load-on-startup> C、 <load-on-startup>-1</load-on-startup> D、 <load-on-startup>true</load-on-startup>load-on-startup>load-on-startup>
A、decelerating when lowering the load B、decelerating when raising the load C、lowering the load at constant speed D、raising the load at constant speed
A、Keep a load on the hoist until all personnel are finished working B、Set the load on a movable dolly when transportation may be needed C、Have one man keep a hand on the load to steady it D、Insure that the lifting gear capacity is not exceeded
A、A.loaded more on the port side forward B、B.loaded equally on both sides with more forward C、C.loaded equally on both sides with more aft D、D.allowed to sit anywhere
A、4，based on the breaking strength B、5，based on the maximum allowable stress C、6，based on the maximum working load D、8，based on the normal working load
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