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【单选题】

干混砂浆生产中,添加剂计量允许偏差为()。

A.
±1%
B.
±2%
C.
±3%
D.
±0.5%
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参考答案:
参考解析:
.
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【单选题】Many Americans harbor a grossly distorted and exaggerated view of most of the risks surrounding food.Fergus Clydesdale, head of the department of food science and nutrition at the University of Massac...

A.
They overlook the risks of the food they eat.
B.
They overestimate the hazards of their food.
C.
They are overoptimistic about the safety of their food.
D.
They overstate the government's interference with the food industry.

【单选题】锚杆的质量检验中,哪些项的允许偏差为不小于设计值?

A.
抗拔承载力、锚固体强度、孔深
B.
抗拔承载力、锚固体强度、垂直度
C.
杆体标高、锚固长度、注浆压力
D.
抗拔承载力、锚固体强度、锚固长度

【多选题】下列属于食品添加剂的是()。

A.
防腐剂
B.
酸味剂
C.
漂白剂
D.
凝固剂