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

<blockquote id="vbfz4"></blockquote>

單項選擇題

To avoid scavenge fires （） the engine timing and equipment maintenance should be correctly carried out.

A.occurred
B.occurring
C.not happening
D.occur

你可能感興趣的試題

單項選擇題

Those generally used additives for cooling water are either anti-corrosion oils or inorganic（）.

A.gases
B.paints
C.inhibitors
D.detergent

單項選擇題

This used piston had been tested and approved as a spare part by the （） during last annual repair.

A.agent
B.shipchandler
C.surveyor
D.engineer

<blockquote id="jksd0"><acronym id="jksd0"><cite id="jksd0"></cite></acronym></blockquote>

<ins id="jksd0"></ins>

<ruby id="jksd0"><xmp id="jksd0"></xmp></ruby>

<ruby id="jksd0"><xmp id="jksd0"></xmp></ruby>