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【单选题】
表面活性剂防蜡剂是通过 而起到防蜡作用的。A.
参与组成晶核，从而使晶核扭曲，不利于蜡晶的继续长大
B.
可吸附在结蜡表面，使它变成极性表面并形成一层水膜，不利于蜡的沉积
C.
可与蜡共同结晶，使蜡的晶型产生扭曲，不利于蜡晶继续长大形成网络结构
D.
将蜡乳化、溶解
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A.
正确
B.
错误
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【判断题】Continuous inventory system removes the need for periodic physical inventory counts.
A.
正确
B.
错误
【单选题】Wealth is important but as a matter of fact , I think , _____ is health that counts.
A.
which
B.
what
C.
there
D.
it
【单选题】I wonder what it is that counts when it _____ learning a foreign language.
A.
comes to
B.
focuses on
C.
speaks of
D.
deals with
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A.
正确
B.
错误
【单选题】The last word of the passage 'counts' most probably means' ______ '.
A.
is most important
B.
is considered
C.
is included
D.
is numbered
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