某公司经烟草专卖行政管理部门审批，主要从事烟叶、复烤烟叶、烟丝的经营业务，所以该公司

根据汉语提示及首字母提示完成句子.

1. Last Sunday, we went to the b____. Some students swam. Others made sand castles (城堡).

2. On Sunday, my parents visited their friends but I s____ at home.

    Yesterday we had a math t____. I got full marks (分数).

3. _____ (是) you 12 years old last year?

4. Everyone in our class _____ (去) shopping last weekend.

5. He _____ (练习) his guitar last night.

6. Paul v____ his grandparents yesterday.

7. Let's go to the m____ tonight. It's great!

8. —Jim, how was your w____ ?

    —Great !

9. Would you like to play v____ with me this weekend?

10. We have two s____ classes every week.

判别工序的的依据是（）和（）。

突然扩大管如图所示，放大前后管路直径分别为100mm和200mm，放大后断面平均流速为v₂=1m/s，则局部水头损失h_m为（）。

A．0.613m

B．0.556m

C．0.459m

D．0.343m

头部的收缩肌能形成“皱成一团”的（）的表情。

A.欢乐

B.悲伤

C.忧愁眉骨

D.悲苦

液化石油气充装单位的充装作业人员每班不少于（）人。

A.1

B.3

C.2

D.1