工艺流程示意图中应包含
A. 原料
B. 设备名称或单元操作名称
C. 流向
D. 控制点
工艺流程草图是由____、____、____及____组成。
She wants to buy a handbag, notbut strong.她想买一个手提包，不要花哨但要结实。（请选出正确的单词）
A. flower
B. pretty
C. fancy
D. ugly
Which of the following is not included in the preparation for a class meeting?
A. make invitations
B. prepare for performances
C. decorate the party venue
D. talk to your teachers
微信支付 
支付宝支付