问题
单项选择题
枢轴型反推门是如何作动的？（）
A.气动作动
B.机械作动
C.液压作动
D.钢索作动
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
枢轴型反推门是如何作动的？（）
A.气动作动
B.机械作动
C.液压作动
D.钢索作动
参考答案：C
There is a big tree in front of the house. I can see a boy under it. He’s an English boy. His name is Mike. He’s reading a book. He’s in No. 5 Middle School in Beijing. Who’s that boy in the room? He is Mike’s brother - Jim. Jim is twelve. He is doing his homework. Mike has a sister – Kate. Kate is cleaning her room. Their parents are at home, too. Their father is writing a letter and their mother is watching TV.
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