乳化剂的用量一般控制在( )
A.0.5%~1%B.0.1%~10%C.0.1%~1%D.0.5%~10%E.5%~10%
参考答案:D
解析:[知识点] 乳剂的稳定性
—Do you know ______ tomorrow?
—At 8 o'clock. [ ]
A. when did she come
B. when she came
C. when will she come
D. when she will come
这是什么踏板?()
A.加速踏板
B.离合器踏板
C.制动踏板
D.驻车制动器