【单选题】
0n cargo booms,preventers are（）.
A、auxiliary guys
B、extra fair leads
C、steel bands
D、stops
查看正确答案A、vertical position B、horizontal position C、boom stop angle D、minimum radius angle
搜题
更多“0n cargo booms,preventers are（）.”相关的问题
第2题
A、increases as the cargo closes the head while hoisting B、increases if the cargo runner is doubled up C、decreases as the boom is topped to a greater angle D、is determined by the thrust stresses on the boom
第8题
A、increases as the angle to the horizontal increases B、increases as the angle to the horizontal decreases C、is greatest at an angle of 45° and decreases as the boom is raised or lowered D、is least at an angle of 45° and increases as the boom is raised or lowered
第9题
A、increases as the boom's angle to the horizontal increases B、is at a maximum when the boom is at a 45° angle to the horizontal C、increases as the boom's angle to the horizontal decreases D、decreases as the boom's angle to the horizontal decreases
