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

<strong id="q9ynq"><button id="q9ynq"></button></strong>

<ins id="q9ynq"></ins><pre id="q9ynq"><strong id="q9ynq"></strong></pre>

單項(xiàng)選擇題

（） at the end of the distribution pipe ensures that adequate pressure is maintained by the pump.

A.A relief valve
B.An alarm
C.A pressure gauge
D.A non-maim valve

你可能感興趣的試題

單項(xiàng)選擇題

（） allows for expansion and water make up in the water cooling system.

A.A top tank
B.A head tank
C.A head valve
D.A drain tank

單項(xiàng)選擇題

（） rods are not in proper condition so that too much fuel is supplied to the corresponding cylinder.

A.Piston
B.Sounding
C.Regulating
D.Connecting

<blockquote id="yfxze"></blockquote>