Conversation 1 What decides whether the woman chooses()
A. The discount.
B. The weight.
C. The size.
D. The distance.
查看答案
What was the man doing()
A. He’s trying to get out of the window.
B. He’s helping Fred.
C. He’s breaking into a house.
D. He’s leaving by the front door.
Conversation 1 What does the woman want to know about the book shelf first?()
A. The design.
B. The price.
C. The door.
D. The size.
海关进出境现场放行一般由海关在进口货物提货凭证或者出口货物装货凭证上签“进口付汇证明”,进出口货物收发货人或其代理人签收进口提货凭证或者出口装货凭证,凭以提取进口货物或将出口货物装运到运输工具上离境。
乳化剂类型改变造成下列乳剂不稳定现象的原因是 酸败是()
A. Zeta电位降低
B. 分散相与连续相存在密度差
C. 微生物及光、热、空气等的作用
D. 乳化剂失去乳化作用
E. 乳化剂性质改变