十二经脉的命名，主要包括了下列哪些内容A．阴阳、五行、脏腑 B．五行、手足、阴阳 C

已知F₁、F₂为双曲线C：x²-y²=1的左、右焦点，点P在C上，∠F₁PF₂=60°，则|PF₁|•|PF₂|=（　　）

A．2

B．4

C．6

D．8

He was running hard to catch up with the rest of the his team when he fell over his own feet. When he

struggled up, he felt his left ankle ______, and found his left hand ______ and his nose _______. [ ]

A. spraining; swelling; bleeding              

B. sprained; swollen; bled

C. spraining; swelling; bled                  

D. sprained; swollen; bleeding

麸炒药物时，100kg药物用麦麸( )。

A．20kg

B．30kg

C．15～20kg

D．10～15kg

E．5kg

泡饮花茶有何要求？

发盘的撤回与撤销有什么区别