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

<legend id="5oquc"></legend>

<pre id="5oquc"><table id="5oquc"></table></pre>

<thead id="5oquc"></thead>

單項選擇題

Which of the following devices is a common basic element with nearly all mechanical governors?（）

A.Power piston
B.Control rack
C.Weights acted on by centrifugal force
D.Isochronous droop spring

你可能感興趣的試題

單項選擇題

A change in the degree of fuel atomization in a diesel engine would most greatly affect （）.

A.air turbulence
B.fuel penetration
C.fuel spray angle
D.fuel injection rate

單項選擇題

Scale and dirt accumulation in the waterside of a lube oil cooler will be indicated by a gradual increase in the lube oil（）.

A.TBN number
B.viscosity
C.temperature
D.foaming

<style id="oo6ux"></style>

<acronym id="oo6ux"><thead id="oo6ux"></thead></acronym>