单项选择题
A. safety cap B. life jacket C. safety harness D. clothes
Secure your safety harness when working （）.A.aloftB.out...
单项选择题Secure your safety harness when working （）.
A.aloft B.outboard C.A&B D.inboard
Rig （）on both side of the bow.A. the gangwayB. the pain...
单项选择题Rig （）on both side of the bow.
A. the gangway B. the paint boards C. the pilot ladder D. all of the above
Sufficient time should be given for each coat to （）.A.b...
单项选择题Sufficient time should be given for each coat to （）.
A.blow B.clean C.dry D.wet
