一女工不慎将头发卷入机器，造成大面积头皮撕脱。关于其创面的描述不正确的是 A．出血较

下列叙述和结论不正确的是（　　）

A．连接仪器的一般顺序是：从下到上．从左到右

B．过滤操作的关键是：一贴、两低、三靠

C．人工净化水的一般步骤是：沉降、过滤、杀菌消毒

D．配制一定质量分数溶液的正确操作是；称量、计算、溶解

用所给词的适当形式填空。

1. Tom's brother ___________ (fall) down the stairs yesterday.

2. Her sister and brother never ___________ (go) to bed before 10: 00 pm.

3. Can he ___________ (play) basketball very well?

4. She ___________ (look) hungry, so her mother ___________ (give) her some food an hour ago.

5. ___________ (not) go to bed too late.

6. She isn't going to ___________ (read) in bed.

7. This school begins ___________ (class) at 7: 45.

8. Simon ___________ (answer) the phone now.

9. The children are ___________ (make) the paper boats.

付款人办理承兑手续时，对于见票后定期付款的汇票( )为绝对记载事项。

A．承兑文句

B．承兑日期

C．承兑人签章

D．付款日期

在包装结构设计图中的双实线（====）表示（）.

A.切痕线

B.双压痕线

C.外拆点痕线

D.开槽线

与通货增长对经济增长有着不利影响相反，通货紧缩对经济增长有着有利影响。 ( )