
提问人:网友w*****2
发布时间:2023年8月5日 09:42
[单项选择题]
其他型制动梁安全链链环磨耗剩余量不小于()。
A.φ4
B.φ5
C.φ6
D.φ7


A.φ4
B.φ5
C.φ6
D.φ7
The main purpose of the passage is__________
to describe how American children spend their summer.
B .
to explain the needs of the modern working families.
C .
to discuss the problems of the current school calendar.
D .
to persuade parents to stay at home to look after their kids.