單項(xiàng)選擇題

Two main lubricating oil pumps are usual and are obligatory in （）.

A.container ships
B.bulk carriers
C.passenger ships
D.barges

你可能感興趣的試題

單項(xiàng)選擇題

In motor-ships, （）, after passing through main and motion bearings and oil cooled pistons, etcis either retained in the bedplate.

A.the fuel oil
B.the lubricating oil
C.the refrigerating oil
D.the hydraulic oil

單項(xiàng)選擇題

In motorships，there are two main circuits, （）.

A.one salt water, one fresh water
B.one salt water, one fuel
C.one fresh water, one fuel
D.one steam, one fuel

<b id="qbv3g"></b>

<b id="qbv3g"></b>

<li id="qbv3g"><meter id="qbv3g"></meter></li><ul id="qbv3g"><th id="qbv3g"></th></ul>