管道工常用量具有盒尺、盘尺、弯尺、法兰直角尺、钢板尺、（）等。
A.水平尺
B.线坠
C.划规
D.量角规
参考答案：A, B, C, D
Most parents think there are differences in their approach _______ their children compared with that
of their parents.[ ]
A. to educate
B. about educating
C. to educating
D. of educating
制作气表-1需统计候平均气温等，候期的划分是每5天一候，全年共72候。（）
