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="48ozc"><xmp id="48ozc"></xmp></ruby>

<pre id="48ozc"><strong id="48ozc"></strong></pre>

單項(xiàng)選擇題

During the power stroke of a four-stroke/cycle diesel engine, most of the side thrust of a trunk-type piston is absorbed by the（）

A.piston skirt
B.pinion
C.crosshead
D.compression rings

你可能感興趣的試題

單項(xiàng)選擇題

A pyrometer is an instrument commonly used to measure（）

A.cylinder pressure
B.flame intensity
C.exhaust gas temperature
D.crankshaft axial alignment

單項(xiàng)選擇題

Worn main bearings in a diesel engine can result in （）

A.decreased compression pressure
B.increased lube oil pressure
C.lower lube oil temperature
D.excessive leakage past the piston rings

<pre id="ea5cw"><pre id="ea5cw"><div id="ea5cw"></div></pre></pre>

<pre id="ea5cw"><strong id="ea5cw"></strong></pre><ins id="ea5cw"></ins><ins id="ea5cw"></ins>

<pre id="ea5cw"><strong id="ea5cw"></strong></pre>

<pre id="ea5cw"></pre>