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【单选题】
切断肺结核传染链的最有效方法是A.
增强所有公民的免疫力
B.
在全民范围内进行科普宣传
C.
发现并治愈病人
D.
经常进行集体肺部X线检查
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举一反三
【单选题】During a fire drill on a ship，what action is required?（）
A.
Start each fire pump
B.
Launch and run a lifeboat
C.
Inventory rescue and fire equipment
D.
Inspect fire hoses
【简答题】配气机构的功用是什么？什么是充量系数？气门式配气机构由哪两个部分组成？
【单选题】During a fire drill on a vessel,what action is required?（）.
A.
Start each fire pump
B.
Launch aand run a lifeboat
C.
Inventory rescue and fire equipment
D.
Inspect fire hoses
【简答题】A good many (build) ______ have been burnt during the fire.
【简答题】配气机构的作用是什么？顶置式配气机构由哪些零件组成？
【简答题】智力的个别差异主要表现在三个方面,即 、 、 的差异。
【单选题】During a fire drill on a vessel, what action is required? ______.
A.
Start each fire pump.
B.
Launch and run a lifeboat.
C.
Inventory rescue and fire equipment.
D.
Inspect fire hoses
【单选题】At least twenty firemen were killed ______ of the collapse of the building during the fire accident.
A.
as a rule
B.
as for
C.
as a result
D.
as far
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