不同种类钢筋进行钢筋代换时应遵循等截面代换的原则。()
查看答案
钢筋的外包尺寸等于下料长度。（）
A. 对
B. 错
Our plane has____________at Shanghai Pudong International Airport. The____________time is 10:30 a.m
A. landed, local
B. land, local
For your safety, please____________in your seat until the plane has come to a complete stop
A. stand
B. stay
If I’m not ____________, you must be Miss Smith from America.
A. mistake
B. mistaken
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