Under normal conditions, the quantity of air circulation becomes less and less.What is the reason?（）

A、dirty delivery ducts

B、too much refrigerant

C、the fouling filters

D、high temperature outside

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更多“Under normal conditions, the quantity of air circulation becomes less and less.What is the reason?（）”相关的问题

第1题

[单选题] Adjustments to the compensating needle valve in a hydraulic governor should be made with the engine at （）

A、maximum power at a normal load B、maximum power and load under normal conditions C、half speed and normal temperature D、normal operating temperature without a load

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第2题

[单选题] （） is a precaution which contributes to avoiding trouble under normal operating conditions.

A、Constant inspection B、Keeping constant load C、Remaining constant temperature D、varying speed

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第3题

[单选题] （） is a precaution which contributes to avoiding trouble under normal operating conditions.

A、Constant inspection B、Keeping constant load C、Remaining constant temperature D、Varying speed

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第4题

[单选题] Under normal conditions, the refrigerant enters the compressor in an operating refrigeration system as a （）.

A、liquid B、dry saturated gas C、wet saturated gas D、superheated vapor

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第5题

[单选题] Which mooring line is likely to undergo the most strain when docking a ship under normal conditions?（）

A、Bow line B、Breast line C、Spring line D、Stern line

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第6题

[单选题] Under normal operating conditions, the highest temperature and pressure conditions existing in a flash-type evaporator will occur in the （）.

A、first stage B、second stage C、distillate cooler D、salt water feed heater

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第7题

[单选题] Early fuel injection timing is indicated by the cylinder pressure being（）

A、above normal with a below normal exhaust temperature B、above normal with a normal exhaust temperature C、below normal with a normal exhaust temperature D、below normal with an above normal exhaust temperature

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第8题

[单选题] Under normal weather and sea conditions when securing a stack of containers with twist locks，lashings are required when the tier exceeds what height? （）

A、Lashings are always required B、One container C、Two containers D、Three containers

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第9题

[简答题] 哪里有英语四级词汇？word版的英语四级词汇A.:normal;B.:normal;

A、A.:normal;
B.:normal;

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