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="lknay"><xmp id="lknay"></xmp></ins>

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

單項選擇題

The needle valve will open when the fuel pressure acting on the needle valve （） exerts a sufficient force to overcome the spring compression.

A.tape face
B.tapered face
C.surface
D.thinner face

你可能感興趣的試題

單項選擇題

The needle valve in the injector （） at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder.

A.will lift
B.will be lifted
C.will close
D.will be closed

單項選擇題

The needle valve in a fuel valve will （） when the fuel pressure action on the needle valve tapered face exerts a force lower than that of the spring compression.

A.be jammed
B.be opened
C.be seated
D.be broken

<pre id="l9scp"><strong id="l9scp"></strong></pre>

<sup id="l9scp"><pre id="l9scp"><div id="l9scp"></div></pre></sup>

<dl id="l9scp"></dl>

<dl id="l9scp"></dl><dl id="l9scp"><strong id="l9scp"></strong></dl>