輪機(jī)英語(yǔ)船舶輔助機(jī)械章節(jié)練習(xí)(2018.02.04)

來(lái)源：考試資料網(wǎng)

1 （） shall be provided to every oil tanker of 150 tons gross tonnage and above to record relevant machinery space and cargo/ballast operations.

2 Thermal energy in transition is also referred to as （）.

3 The amount of fluid delivered by a helical pump can be regulated by （）.

4 The amount of fluid delivered by a reciprocating pump can be regulated by （）.

5 Because of the reduced （）in the distillation system, some of the sea water boils as it flows through the tubes of the evaporator.

6 The low pressure side of a refrigeration system is considered to exist from the （）.

7 The correct pH value of boiler water is achieved by continuous addition of a suitable （） to the feed.

8 Which of the following pumps is used where a relatively high pressure and small capacity are required?（）

9 An advantage of a helical gear pump over a simple gear pump is that the helical gear pump is capable of （）.

10 Special thrust devices are provided on ships to improve their （） at zero ship speed when the rudder is relatively ineffective.