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

<blockquote id="4mal0"></blockquote>

單項(xiàng)選擇題

Because the tie bolts are so close to the crankshaft, some engines employ （）to hold the crankshaft main bearing cap in position instead of conventional studs and nuts.

A.through bolts
B.jack bolts
C.tap bolts
D.fitted bolts

你可能感興趣的試題

單項(xiàng)選擇題

To prevent excessive （） in the transverse girders, the tie bolts are positioned as close to the center of the crankshaft as possible.

A.thermal stresses
B.bending moments
C.thermal loads
D.surface tensions

單項(xiàng)選擇題

The A-frames carry the crosshead guides and support the engine （）.

A.foundation
B.seating
C.entablature
D.bedplate