当总体服从正态分布，但总体方差未知的情况下，H0：μ=μ0，H1：μ＜μ0则H0的拒

单词拼写。

1. She has all the personal q____ of a good teacher, like a sense of humor and patience.

2. Tom is not one of the top students, but a boy of average _____(智商).

3. Though my husband is not rich now but he has great earning p_____.

4. The robber was a_____ by the police while he was trying to escape from the jail.

5. It is impolite to i_____ others while they are having a conversation.

6. By a strange _____(巧合) we happened to be travelling on the same train.

7. It seemed as if everything was _____(毁坏) in the earthquake.

8. The baby b_____ out crying as soon as he saw the snake.

9. Tsunami is one of the most serious natural _____(灾害) in Japan.

10. I said hello to her, but she i______ me completely, which made me very angry.

对燕麦胚芽鞘进行如图处理：①的胚芽鞘尖端套上不透光的锡箔小帽，②将尖端下部用锡箔遮住，③在尖端横向插入锡箔，④在尖端横向插入琼脂片，⑤切去胚芽鞘尖端。请据图判断，下列哪一项是错误的？

A．有单侧光照时仍直立向上生长的是①

B．给予右侧光照时，弯向光源生长的是②④

C．单侧光照时，不生长也不弯曲的是③⑤

D．如把④放在匀速转盘上，并给予右侧光照，生长情况是向右弯曲生长

我国负责临床实验室管理的专业机构是（）

A.疾病控制中心

B.食品药品监督管理局

C.临床检验中心

D.卫生监督局

E.中华医学会

北伐战争中，国民革命军在湖北著名的（）战役和（）战役中，击溃了吴佩孚的主力。

架空线路的日常维护工作的内容是什么（）？

A.检查光缆外护套及垂独有无异常情况，发现问题及时处理；

B.检查吊线与其他线缆交越处的防护装置是否齐全、有效及符合规定；

C.整理、添补或更换缺损的挂钩，清除线路上和吊线上的杂物；

D.逐杆检修。检查架空线路接头盒和预留处是否可靠。