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

<em id="fifqv"></em>

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

單項(xiàng)選擇題

After "F.W.E" is given, the air system is shut down, the （） gear put in, all drains and indicator cocks opened, and the cooling water kept running.

A.steering
B.timing
C.turning
D.running

你可能感興趣的試題

單項(xiàng)選擇題

A-frames are mounted on the bed plate and support （） and cylinder block.

A.the main bearing
B.the cylinder cover
C.the entablature
D.the sump

單項(xiàng)選擇題

A-frames and cylinder block is held together by （） to form a rigid structure.

A.connecting rods
B.piston rods
C.tie rods
D.jack-bolts

<pre id="ixdgl"><legend id="ixdgl"></legend></pre>