How should you signal the crane operator to use the main hoist?（）.<br>A:Use one hand to give any miotion signal , and place the other hand motionless in front of the hand giving the motion signal<br>B:Extend arm with the thumb pointing up , and flex the fingers in and out for as long as the load movement is desired<br>C:First tap your elbow with one hand , and then proceed to use regular signals<br>D:First tap the top of your head with your first , and then proceed to use regular signals

How should you signal the crane operator to use the main hoist?（）.
A:Use one hand to give any miotion signal , and place the other hand motionless in front of the hand giving the motion signal
B:Extend arm with the thumb pointing up , and flex the fingers in and out for as long as the load movement is desired
C:First tap your elbow with one hand , and then proceed to use regular signals
D:First tap the top of your head with your first , and then proceed to use regular signals

出自：海船船员证

提示：
同一【IP】的非会员用户每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10252937】个 (题库试题定时更新)