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

<nobr id="j3b3y"></nobr>

<optgroup id="j3b3y"></optgroup>

<kbd id="j3b3y"><table id="j3b3y"><div id="j3b3y"></div></table></kbd>

單項選擇題

The cleaned heated oil, after passing through the centrifuges, is to be pumped to a （）.

A.settling tank
B.service tank
C.ballast tank
D.drain tank

你可能感興趣的試題

單項選擇題

The cast iron guide-ways for （） are attached to the top section and seal off the crankcase.

A.the connecting rod
B.the cross-head
C.the piston rod
D.the air box

單項選擇題

The cast iron（）for the cross-head are attached to the top section and seal off the crankcase.

A.cylinder cover
B.cross-head shoes
C.guide-ways
D.scavenging boxes

<nav id="waemj"><th id="waemj"></th></nav>