无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

<strong id="jkmb4"></strong>

<dl id="jkmb4"></dl>

單項選擇題

The defective places in the furnace （） with fire bricks.

A.should be paved
B.should be cleaned
C.should be dismantled
D.should be welded

你可能感興趣的試題

單項選擇題

After fitting back in place the gear wheels, don’t forget to （） them.

A.fulfill
B.eliminate
C.grease
D.bend

單項選擇題

What separate the high pressure side from the low pressure side in a refrigeration system?（）

A.Condenser and thermal expansion valve
B.King and solenoid valves
C.Compressor and thermal expansion valve
D.Condenser and solenoid valve

<pre id="bxpk7"><strong id="bxpk7"></strong></pre>