门式脚手架搭设中对脚手架整体垂直度与水平度偏差有何要求?
参考答案:
垂直度允许偏差为脚手架高度的1/600及±50mm;水平度允许偏差为脚手架长度的1/600及±50mm。
I felt____after he opened the present. I thought he would have liked it.
A.interested
B.embarrassed
C.excited
D.puzzled
变速器的润滑方式采用()润滑。
A、飞溅
B、轴心润滑
C、涂抹
D、分离润滑