内踝尖下方凹陷处的穴位是（）。
A、侠溪
B、照海
C、大钟
D、中封
E、昆仑
参考答案：B
— Where ___________ you last Sunday?
— I ___________ in New York.[ ]
A. was, was
B. were, were
C. were, was
在DCS上，一个简单得PID控制回路有哪几点构成？如何手动控制阀位开度？
