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

<pre id="a98ld"><strong id="a98ld"></strong></pre>

單項(xiàng)選擇題

A hydraulic machine is one that uses （） to do work.

A.liquid
B.steam
C.gas
D.electricity

你可能感興趣的試題

單項(xiàng)選擇題

If oil density were greater than water’s, the oil separator （）.

A.did work
B.would work well
C.didnt work
D.wouldnt work

單項(xiàng)選擇題

Oil Record Book Part I shall be provided to every oil tanker of 150 tons gross tonnage and above and every ship of 400 tons gross tonnage and above, （） oil tankers, to record relevant machinery space operations.

A.as well as
B.as long as
C.rather than
D.other than

<dl id="ilvzd"><strong id="ilvzd"></strong></dl>