根据下列材料回答下列各 题。 A．丙二醇 B．司盘-60 C．亚硫酸钠 D．二氯二氟甲烷 E．尼泊金乙酯 可用作气雾剂防腐剂的物质是

The writer prefers face-to-face communication because of the following reasons EXCEPT______.A．face-to-face communication is more immediate and you can judge the speaker's attitude and emotionsB．you can talk to many people at the same time in a face-to-face communicationC．nonverbal language conveys more meaning than verval language in a communicationD．you can get emotional satisfaction by having physical contact with the person you are talking to in a face-to-face communication 点击查看答案

根据下列材料回答下列各 题。 A．最粗粉 B．粗粉 C．细粉 D．极细粉 E．最细粉 能够全部通过八号筛，并含能通过九号筛不少于95％的粉末，

A.最粗粉
B.粗粉
C.细粉
D.极细粉
E.最细粉

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