99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

<ruby id="zlbm5"><xmp id="zlbm5"></xmp></ruby>

<sup id="zlbm5"><legend id="zlbm5"><div id="zlbm5"></div></legend></sup>

單項(xiàng)選擇題

A viscous damper, as used on a marine diesel, is a sealed precision built device which dampens the torsional vibrations in the （）.

A.camshaft
B.flywheel
C.crankshaft
D.thrust shaft

你可能感興趣的試題

單項(xiàng)選擇題

A diesel engine is operating at 1800 RPM and driving a propeller at 600 RPMWhat is the speed reduction ratio?（）

A.030 to 1
B.300 to 1
C.333 to 1
D.330 to 1

單項(xiàng)選擇題

High diesel engine cooling water temperatures can be caused by （）.

A.air in the cooling system
B.an overhauled water pump
C.correct amount of coolant
D.no air in the cooling system

<dl id="yo70v"><legend id="yo70v"><input id="yo70v"></input></legend></dl>

<pre id="yo70v"><legend id="yo70v"></legend></pre>

<pre id="yo70v"><strong id="yo70v"></strong></pre>