问题
单项选择题
将60%的司盘-80(HLB值4.3)和40%吐温-80(HLB值15)混合后HLB值为
A．3.5
B．4.8
C．8.6
D．10.0
E．7.6
答案
参考答案：C
解析：混合后的HLB值为：(60%×4.3+40%×15)/(60%+40%)＝8.58≈8.6。
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将60%的司盘-80(HLB值4.3)和40%吐温-80(HLB值15)混合后HLB值为
A．3.5
B．4.8
C．8.6
D．10.0
E．7.6
参考答案：C
解析：混合后的HLB值为：(60%×4.3+40%×15)/(60%+40%)＝8.58≈8.6。
| Cloze test. 完形填空。 |
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