<form id="3xh1u"><meter id="3xh1u"><dfn id="3xh1u"></dfn></meter></form><rt id="3xh1u"><wbr id="3xh1u"><sup id="3xh1u"></sup></wbr></rt>

<button id="3xh1u"><input id="3xh1u"><xmp id="3xh1u">

<rt id="3xh1u"></rt><rt id="3xh1u"><tr id="3xh1u"><noframes id="3xh1u">

<rt id="3xh1u"><delect id="3xh1u"><small id="3xh1u"></small></delect></rt><li id="3xh1u"><input id="3xh1u"></input></li>

單項(xiàng)選擇題

A feed pump for an auxiliary boiler might lose suction if the （）.

A.boiler water level is low
B.feedwater is too hot
C.boiler steam demand is low
D.feedwater is too cold

你可能感興趣的試題

單項(xiàng)選擇題

Fuel is admitted to a diesel engine cylinder through the （）.

A.intake valves
B.carburetor
C.exhaust ports
D.injector nozzles

單項(xiàng)選擇題

Diesel engine main and connecting rod precision bearings are made in halvesEach half exceeds one-half the bearing circumference by a small amountThe small amount is termed （）.

A.clearance
B.crush
C.pitch
D.thrust

感谢您访问我们的网站，您可能还对以下资源感兴趣：

国产黄色视屏

视频一区二区无码制服师生国产三级香港三级人妇国产码一区二区在线观看国产伦精品一区二区三区免费观看

<li id="8czmb"><input id="8czmb"><xmp id="8czmb">

<li id="8czmb"><input id="8czmb"></input></li><rt id="8czmb"><tr id="8czmb"><noframes id="8czmb">