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

<ins id="bpdyl"></ins>

<ruby id="bpdyl"><xmp id="bpdyl"></xmp></ruby><pre id="bpdyl"><acronym id="bpdyl"></acronym></pre>

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

單項選擇題

When the direction handle of telegraph is moved, the relative position of camshaft and crankshaft will be（）

A.changed accordingly
B.unchanged
C.positioned ahead
D.positioned astern

你可能感興趣的試題

單項選擇題

Which one of the followings may not be checked before engine starting?（）

A.tank level
B.Various filters
C.Drains
D.seawater temperature

單項選擇題

The is employed to warm up a large diesel engine before its starting（）

A.hot air
B.hot boiler water
C.cylinder water
D.hot seawater

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

<dl id="vwtgi"></dl>

<pre id="vwtgi"><legend id="vwtgi"><s id="vwtgi"></s></legend></pre>

<sup id="vwtgi"></sup>

<pre id="vwtgi"><acronym id="vwtgi"></acronym></pre>