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

單項選擇題

The position of the piston parts in relation to each other is secured by means of （） in the crown.

A.a mark
B.a bolt
C.a dowel pin
D.a measuring tool

你可能感興趣的試題

單項選擇題

The position of the interface between oil and water within the centrifuge is achieved by the use of （）.

A.gravity disc
B.centrifugal bowl
C.a stack of discs
D.main sealing ring

單項選擇題

The position of （） on the crosshead on a large diesel engine is determined by dowel pins.

A.the guideway
B.the piston rod
C.the crosshead shoes
D.the interlocked circlip

<ins id="cx9z7"><output id="cx9z7"></output></ins>

<blockquote id="cx9z7"></blockquote>