單項選擇題

The boom stops are installed on an offshore crane to（）.

A.prevent the boom from being raised too high
B.prevent the boom from swinging
C.support the boom when not in use
D.prevent the boom from being lowered

你可能感興趣的試題

單項選擇題

The annual survey for endorsement of a Load Line Certificate must be held within（）.

A.the three month period immediately following the certificate's anniversary date
B.the three month period immediately preceding the certificate's anniversary date
C.three months either way of the certificate's anniversary date
D.the three month period centered on the certificate's anniversary date

單項選擇題

The angle between the flukes and the shank of an anchor is called the（）.

A.holding angle
B.fleet angle
C.fluke angle
D.shank angle

97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区 狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

The boom stops are installed on an offshore crane to（）.

你可能感興趣的試題

The annual survey for endorsement of a Load Line Certificate must be held within（）.

The angle between the flukes and the shank of an anchor is called the（）.

97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久