【单选题】【消耗次数：1】
制备W/O型乳剂时，采用表面活性剂为乳化剂，适宜的表面活性剂HLB范围应为
①
HLB值为8~16
②
HLB值为7～9
③
HLB值为3～6
④
HLB值为1～3
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相关题目
【单选题】
制备O/W型乳剂时，若采用表面活性剂为乳化剂，适宜的表面活性剂HLB范围应为
①
HLB值为8～16
②
HLB值为7～9
③
HLB值为3～6
④
HLB值为15～18
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strongly
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probably
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wisely
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properly
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She has a good _________ , she can remember long lists of numbers.
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meaning
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message
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memory
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across
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over
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through
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【单选题】
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safely
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quickly
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quietly
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clearly