对船舶起货机电动机的要求规定其机械特性为（）机械特性。

When the machinery spaces are in the periodic unmanned condition, shall be immediately available and on call to attend the machinery space（）.

Each fire hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.

The guard, fencing or shielding for moving parts or machinery can be removed for repair only when the machinery it belongs to（）

The additional mark （）in the Classification Certificate for Machinery represents that personnel are watching at engine assembly control station and monitoring all machinery and electronic devices.

In a hydraulic system, （） are used to protect the system from over pressure.

Among the basic categories of equipment, which of the following are used to convert mechanical into hydraulic energy?（）

水下爆破工作船及其辅助船舶，应按规定悬挂（）。

Most hydraulic steering gears are fitted with relief valves which（）

Banks have no liability for any delay or loss caused by postal or telex failure.

【参考范例九】Education Are you with a job or are you studying?

Compensated flow control or constant flow valves are used in hydraulic systems to（）