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【单选题】
单凝聚法制备微囊时,加入硫酸钠水溶液的作用是()A.
凝聚剂
B.
稳定剂
C.
增塑剂
D.
稀释剂
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参考解析：
知识点：
皮皮学刷刷变学霸
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.
【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
【简答题】初中时是怎么描述电磁感应现象的
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