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

<pre id="xeros"></pre>

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

<dl id="xeros"><legend id="xeros"><input id="xeros"></input></legend></dl>

單項選擇題

A ship crane which has been idle for a period of over six months shall be inspected to the same standards as a（）.

A.yearly inspection
B.quarterly inspection
C.monthly inspection
D.weekly inspection

你可能感興趣的試題

單項選擇題

A sheepshank is used to（）.

A.keep a line from fraying
B.join lines of unequal size
C.stop off a line
D.shorten a line

單項選擇題

A sextant having an index error that is off the arc has a（）.

A.positive correction
B.dip error
C.negative correction
D.semidiameter error

<pre id="yyc0z"><acronym id="yyc0z"></acronym></pre><pre id="yyc0z"><strong id="yyc0z"></strong></pre>