默认题库 - 船舶设备名称 - 查题吧

单选题

All echo-sounders can measure the（）.

A. actual depth of water
B. actual depth of water below keel
C. average depth from waterline to hard bottom
D. average depth of water to soft bottom

单选题

The Vessel is fully fitted with cargo（）.

A. beats
B. beasts
C. bacons
D. batte

单选题

A DECK，SPACE，AREA，ETC.，NOT PERMITTED TO BE ENTERED FOR SAFETY REASONS defines（）.

A. Restricted area
B. Closed area
C. Prohibited place
D. Forbidden place

单选题

An example of a messenger is a（）.

A. fairlead
B. heaving line
C. stay
D. war

单选题

As the propeller turns，voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency，pitting of the blades，and vibration. These voids are known as（）.

A. advance
B. cavitation
C. edging
D. sli

单选题

If a gasoline engine turns over freely but will not start，the cause is generally（）.

A. a defective ignition system
B. low lube oil level
C. weak valve springs
D. too heavy a load

单选题

Limit switches are used on which davits?（）

A. Sheath-screw davits
B. Gravity davits
C. Radial davits
D. Quadrantal davit

单选题

The bypass valve on a self-contained breathing device should be opened if（）.

A. you are entering a space containing poisonous vapors
B. you are entering a space containing explosive gases
C. the regulator of the breathing apparatus malfunctions
D. the face piece of the breathing device is too tight

单选题

The C0₂ flooding system is actuated by a sequence of steps which are（）.

A. break glass，pull valve，break glass，pull cylinder control
B. sound evacuation alarm，pull handle
C. open bypass valve，break glass，pull handle
D. open stop valve，open control valve，trip alarm

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