船舶辅助机械题库_船舶辅助机械试题_船舶辅助机械在线答题_船舶辅助机械搜题在线使用拍照解题

【单项选择题】 An internal bypass is provided on some hydraulic system...

【单项选择题】 A grease gun is generally used to lubricate a （）.

【单项选择题】 Thermostatic expansion valves can be adjusted for （）.

【单项选择题】 The amount of fluid friction or internal friction inhere...

【单项选择题】 The major source of chemical contaminants in hydraulic f...

【单项选择题】 If the thermal bulb of an expansion valve is incorrectl...

【单项选择题】 Which of the listed pumps is NOT a positive displacemen...

【单项选择题】 Heavy wear in a particular area of the inner circumfere...

【单项选择题】 A pressure drop through the refrigerant liquid line may...

【单项选择题】 Low compressor head pressure in a refrigeration system c...

【单项选择题】 Which of the problems listed would came the discharge t...

【单项选择题】 The usual symptoms of cavitation in a centrifugal pump ...

【单项选择题】 One cause of high head pressure occurring in a refriger...

【单项选择题】 The control mode in which the final control element is...

【单项选择题】 Pitting in the suction areas of a centrifugal pump bron...

【单项选择题】 If the head pressure of a reciprocating refrigeration co...

【单项选择题】 A salinity indicator is used to determine the （）.

【单项选择题】 An increasing head pressure in a refrigeration system, ...

【单项选择题】 Which of the following problems could cause the high pr...

【单项选择题】 The general purpose of a heat exchanger is to （）.

【单项选择题】 The temperature differential occurring between the inlet ...

【单项选择题】 The rate of heat transfer between the hot and cold flu...

【单项选择题】 If the relief valve on the discharge side of a hydraul...

【单项选择题】 A salinity indicator is used to determine the （）.

【单项选择题】 If the suction pressure at the refrigeration compressor ...

【单项选择题】 If the viscosity of the liquid being transferred remains...

【单项选择题】 On tank vessels equipped with power operated cargo tank...

【单项选择题】 When a refrigeration compressor has developed a high hea...

【单项选择题】 Which of the following statements is correct concerning ...

【单项选择题】 Who is responsible for ensuring that someone is assigned...

【单项选择题】 The rate of heat transfer from a hot region to a cold...

【单项选择题】 A gradual decrease in the discharge pressure of an oper...

【单项选择题】 If you are given the job of adding hydraulic fluid to...

【单项选择题】 The output volume of a positive fixed displacement pump...

【单项选择题】 An excessive charge of refrigerant in an air-cooled ref...

【单项选择题】 When the steering gear is in operation, you should （...

【单项选择题】 The oil in a cargo winch gear box should be sampled p...

【单项选择题】 A spur gear pump should be operated with the discharge...

【单项选择题】 The capacity of a centrifugal pump can be increased by...

【单项选择题】 Which of the following forms of energy is demonstrated ...

【单项选择题】 While inspecting the steering system at sea, you should...

【单项选择题】 Excessive air leakage into the suction side of a centri...

【单项选择题】 Increasing the speed of a centrifugal pump will result ...

【单项选择题】 If the discharge valves on a refrigeration compressor ar...

【单项选择题】 Which of the following terms could be applied to the s...

【单项选择题】 The delivery rate of an axial-piston hydraulic pump is...

【单项选择题】 Badly leaking refrigeration compressor discharge valves wi...

【单项选择题】 Mechanical energy in transition is referred to as （）.

【单项选择题】 If you change from a low pour point lubricant to a hi...

【单项选择题】 When a vessel is in dry-dock, the vessel’s engineers...

【单项选择题】 Air line lubricators are used in compressed air systems...

【单项选择题】 Which of the listed devices would be installed at a co...

【单项选择题】 Power is defined as the （）.

【单项选择题】 To correct the condition of slugging and flooding back ...

【单项选择题】 On small, low pressure, air compressors, the cylinders...

【单项选择题】 While troubleshooting a refrigeration system for low head...

【单项选择题】 Air trapped in the hydraulic fluid of a steering system...

【单项选择题】 Overgreasing of ball bearings installed on pumps will re...

【单项选择题】 The energy associated with molecules is known as （）.

【单项选择题】 “Flooding back” is a condition where the liquid refrig...

【单项选择题】 Thermal energy in transition is also referred to as （...

【单项选择题】 Noise in a refrigeration compressor can be caused by （...

【单项选择题】 The air charge leaving an intercooler, or after-cooler...

【单项选择题】 Before starting a reciprocating, steam-driven pump that...

【单项选择题】 When air becomes trapped in the hydraulic fluid of a s...

【单项选择题】 If a refrigeration system were short of refrigerant, th...

【单项选择题】 Condensate must be drained from the intercooler and afte...

【单项选择题】 In the refrigeration system, a shortage of refrigerant ...

【单项选择题】 Which of the following conditions must exist for heat t...

【单项选择题】 A warmer than normal compressor suction line might be c...

【单项选择题】 The unloading system on an air compressor will （）.

【单项选择题】 Which of the listed methods of heat transfer takes plac...

【单项选择题】 Which of the conditions listed will cause a refrigeratio...

【单项选择题】 Air compressor cylinder un-loaders enable the compressor...

【单项选择题】 The movement of heat within a fluid, caused by the ap...

【单项选择题】 A gate valve installed in a pipeline should be （）.

【单项选择题】 Which of the following modes of heat transfer does NOT...

【单项选择题】 Which of the valves listed should be used either in th...

【单项选择题】 If a refrigeration compressor is running continuously wit...

【单项选择题】 In the design of hydraulic piping and equipment consider...

【单项选择题】 Which of the conditions listed represents the greatest e...

【单项选择题】 When the vessels steering wheel on the navigation bridge...

【单项选择题】 Which of the listed statements is correct concerning ref...

【单项选择题】 By which of the following means is force efficiently pr...

【单项选择题】 Which of the following statements concerning energy is c...

【单项选择题】 In a compression refrigeration cycle, the temperature of...

【单项选择题】 Excessive oil foaming in the crankcase of a refrigeratio...

【单项选择题】 Strainers are commonly used in hydraulic systems to （）...

【单项选择题】 On which of the following heated surfaces of a flash t...

【单项选择题】 Machinery operating features are designed to help conserv...

【单项选择题】 A refrigerant with oil in solution has a （）.

【单项选择题】 Which of the following terms would best describe the te...

【单项选择题】 To thoroughly pump out the bilges using a horizontally ...

【单项选择题】 The discharge head of a centrifugal pump will vary dire...

【单项选择题】 An increase in the heat load to a refrigeration system...

【单项选择题】 Which of the following types of hydraulic pumps would b...

【单项选择题】 Which of the following statements is true concerning cen...

【单项选择题】 The temperature of the refrigerant in the evaporator coi...

【单项选择题】 Refrigerant is circulated through a refrigeration system ...

【单项选择题】 The type of gauge most commonly used to measure pressur...