搜题

【单选题】

Internal combustion engine crankcase vent outlets must be equipped with （）

A、hinged rain guards

B、corrosion resistant flame screens

C、dipsticks for measuring oil levels

D、crankcase ventilation fans

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更多“Internal combustion engine crankcase vent outlets must be equipped with （）”相关的问题

第1题

[] Since the burning or combustion takes place within the engine itself, the engine is known as （）.

A、A.a fire -tube boiler B、B.an internal combustion engine C、C.an external combustion engine D、D.an internal combustion generator

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第2题

[单选题] The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot, high pressure air in a （）.

A、air bottle B、air compressor C、crank case D、combustion chamber

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第3题

[] The diesel engine is a type of （）.

A、A.turbine engine B、B.gas turbine C、C.steam engine D、D.internal combustion engine

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第4题

[单选题] Most pedestal crane power is provided by（）.

A、Electro-hydraulic units B、Steam units C、Independent internal combustion power units D、All of the above

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第5题

[单选题] An emergency generator, driven by an internal combustion engine, shall be tested under load for a minimum of 2 hours at least once every （）

A、week B、2 weeks C、month D、3 months

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第6题

[单选题] Gas exchange, which is a basic part of the cycle of an internal combustion engine, is（）

A、the supply of normal air and removal of compressed air B、the supply of fuel oil and combustion of the atomized oil C、the supply of fresh air and removal of exhaust gases D、the supply of fresh air and removal of the extra heat

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第7题

[单选题] In a modern internal combustion diesel engine, the load carrying part of the engine is referred to as the（）

A、bedplate or base B、sump or oil pan C、cylinder block D、frame

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第8题

[单选题] The main operating characteristic of diesel engines which distinguishes them from other internal combustion engines is the （）

A、method of supplying air B、cooling system C、method of igniting fuel D、valve operating mechanism

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第9题

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

A、fireman's outfit B、low-velocity spray applicator C、marine strainer D、pick axe

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