问题
单项选择题
在采用电动时，启闭的速度较快，适用于（）和经常启闭的闸门。
A、工作闸门
B、检修闸门
C、事故闸门
D、快速闸门
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
在采用电动时，启闭的速度较快，适用于（）和经常启闭的闸门。
A、工作闸门
B、检修闸门
C、事故闸门
D、快速闸门
参考答案：C
| 根据上文，填写下面家谱中所缺的职业或称呼，每空一词。 | ||||||||
| My name is Jim. I have a big family. There are six people (人) in my family. My grandfather is a doctor. My grandmother is a nurse. They work in the same hospital (同一家医院). My father and mother are teachers in No.11 Middle School. My father teaches (教) Chinese, but my mother is an English teacher. Kate is my sister. We are new students in No.11 Middle School. My grandparents and parents like (喜欢) us and we like our family. We are very happy. | ||||||||
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