大椎与肩峰连线的中点处为()。
A.天髎穴
B.曲垣穴
C.巨骨穴
D.肩井穴
E.秉风穴
参考答案:D
-Our sports meeting _____ next week, won't it?
- _____, but the weather report says it will rain next week.
A.will take place; Yes
B.will be taken place; Yes
C.won't take place; No
D.will take place; No
变频调速频率调节范围一般为()Hz。
A.0~50
B.50~100
C.0.5~100
D.0.5~320