分娩镇痛首选（） A.0.25%～0.5%普鲁卡因 B.3%～5%普鲁卡因 C.1%

阅读理解，判断正"T"误"F"。

    Here's a message from Mary. She went to hospital yesterday. She had a cold. But she is better now.

This morning she went to Lucy's office. She met Lucy and Tom there. She is very busy now. She will be

back at seven o'clock. She will have dinner with us. I will make Chinese food for her. She likes Chinese

food very much.

( ) 1. Mary went to school yesterday.

( ) 2. Mary had a cold.

( ) 3. Mary went to Tom's office.

( ) 4. Mary likes English food very much.

下列说法中正确的是[ ]

A．在化学反应过程中，发生物质变化的同时不一定发生能量变化

B．生成物全部化学键形成时所释放的能量大于破坏反应物全部化学键所吸收的能量时，反应为吸热反应

C．反应产物的总焓大于反应物的总焓时，反应吸热，ΔH＞0

D．ΔH的大小与热化学方程式的计量系数无关

肾移植病人开放血管时血压宜维持于较高水平，主要采取（）

A.静滴多巴胺

B.α受体兴奋药

C.β受体兴奋药

D.α和β受体兴奋药

E.减浅麻醉

主电动机滑环检查时，同一刷架上每个炭刷的压力其相互差值不应超过（）%。

A、5

B、10

C、15

D、20

可绕水平轴回转的夹持货物的属具称为（）

A、回转货叉

B、夹持器

C、回转夹持器

D、倾翻货叉