角杆拉线,角深不大于()时,拉线同吊线程式
A.15m
B.13M
C.20M
D.30M
参考答案:B
— Miss Smith will teach us English this term.
— _____ She is a very good teacher. [ ]
A. Well done!
B. You're lucky.
C. It's a pity.
骨质疏松症疼痛特点是()
A.疼痛呈弥漫性
B.无固定的疼痛部位
C.无压痛点
D.劳累后加重
E.活动后加重