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【单选题】
将Span-80(HLB值为4.3)35%和Tween-80(HLB值为15.0)65%混合，此混合物的HLB值为()。A.
9.7
B.
8.6
C.
10.0
D.
11.26
E.
7.8
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【单选题】According to legend, Aesculapius bore two daughters, Panacea and Hyegeia, who gave rise to dynasties of healers and hygienists. The schism (分离)remains today, in clinical training and in practice and, ...
A.
refute a counterargument
B.
draw a distinction
C.
discuss a dilemma
D.
isolate causes
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