具有收敛元气、固表止汗的穴位是（）
A.肾纹
B.肾纹
C.肾经
D.二马
E.肾顶
参考答案：E
— Did you went swimming last weekend?
— _____[ ]
A. Yes, I didn't.
B. No, I didn't.
C. No, I did.
标准煤是指收到基低位发热量等于（）KJ/Kg的煤。
