补货操作注意事项有()。
A、首先要掌握缺货情况
B、补货前要清洁货架
C、补货时要注意先进先出原则
D、补货后清理场地
参考答案:A, B, C, D
Read and choose. (读句子,选择与句子相匹配的图片)
( )1. Excuse me, where is the washroom?
( )2. Listen! Students are having the music class now.
( )3. I often play ping-pong in the gym.
( )4. Do you often go to the library?
结合肺段模式图,选出右肺上叶的组成()
A.A
B.A+B
C.A+B+C
D.A+B+C+D
E.A+B+C+D+E