• 单选题 The pressure head of a pump is given in the unit of （）.

  标签：船舶辅助机械 2021-12-31 19:27

• 单选题 Domestic water pump is started automatically by （） which operates as the water level falls to a predetermined level.

  标签：船舶辅助机械 2021-12-31 19:25

• 单选题 A centrifugal pump may fail to deliver water when first started if the （）.

  标签：船舶辅助机械 2021-12-31 19:24

• 单选题 Increased internal leakage, in addition to poor hydraulic system response,and inadequate lubrication, is the result of （）.

  标签：船舶辅助机械 2021-12-31 18:43

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

  标签：船舶辅助机械 2021-12-31 18:43

• 单选题 On which of the following heated surfaces of a flash type evaporator would you be more likely to find soft scale formation?（）

  标签：船舶辅助机械 2021-12-31 18:43

• 单选题 A pump is said to have "negative suction head" when the pump is located （）.

  标签：船舶辅助机械 2021-12-31 18:36

• 单选题 Which of the following terms could be applied to the simple definition the energy of motion?（）

  标签：船舶辅助机械 2021-12-31 18:36

• 单选题 Which of the following terms is used to identify the pressure of the liquid entering a pump?（）

  标签：船舶辅助机械 2021-12-31 18:36

• 单选题 In an oil cooler circulated by sea water, the oil is at a larger pressure the result being that any leak in the cooler will mean a loss of （）.

  标签：船舶辅助机械 2021-12-23 12:30

• 单选题 The crane is usually mounted on a pedestal to offer adequate （） to the operator.

  标签：船舶辅助机械 2021-08-19 12:26

• 单选题 Which of the listed conditions can lead to cavitation气穴in a centrifugal pump?（）

  标签：船舶辅助机械 2021-08-08 06:09

• 单选题 If an anchor windlass has been idle for some time, you should （）.

  标签：船舶辅助机械 2021-08-07 10:05

• 单选题 Some pumps use packing as sealing glandThe gland should be （）.

  标签：船舶辅助机械 2021-08-07 10:05

• 单选题 Mechanical energy in transition is referred to as （）.

  标签：船舶辅助机械 2021-07-20 04:34

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