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

<blockquote id="gao9g"></blockquote>

單項(xiàng)選擇題

（）is put into use in the late years to maintain a preset tension in a mooring line after a ship has been tied up at a pier.

A.The large-tension mooring
B.The small-tension mooring
C.The variable-tension mooring
D.The constant-tension mooring

你可能感興趣的試題

單項(xiàng)選擇題

However fast or slow the combustion rate, it is still a （） between carbon, hydrogen, sulphur and oxygen that releases heat.

A.physical deformation
B.state exchange
C.chemical reaction
D.coalescence

單項(xiàng)選擇題

The trend nowadays is to build the frame box as a separate fabricated construction and then, after stress relieving and machining the mating surfaces, to mount it on the （）.This has the advantage of saving weight.

A.seating
B.bedplate
C.entablature
D.cylinder block

<ruby id="drgje"><xmp id="drgje"></xmp></ruby>

<blockquote id="drgje"></blockquote>

<ruby id="drgje"><output id="drgje"></output></ruby>