无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

<source id="bdboz"></source><dl id="bdboz"></dl>

<ins id="bdboz"></ins>

<pre id="bdboz"><dfn id="bdboz"><thead id="bdboz"></thead></dfn></pre>

<ruby id="bdboz"><small id="bdboz"></small></ruby>

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

單項選擇題

Fuel oil is thought to be one of the main factors （） the operation and maintenance of an engine.

A.have nothing to do with
B.having nothing to do with
C.have much to do with
D.having much to do with

你可能感興趣的試題

單項選擇題

Fuel oil is pumped by means of （） from the bunker tanks.

A.a transfer pump
B.a bilge pump
C.a service pump
D.a vacuum pump

單項選擇題

Fuel is not supplied to the corresponding cylinders due to （）.

A.a failure of the motor
B.a failure of lubricator
C.a failure of cylinder
D.a failure of fuel pump

<sup id="nmp9o"><legend id="nmp9o"><div id="nmp9o"></div></legend></sup>