A.5Hz,10A
B.50Hz,10A
C.50Hz,10 A
D.5Hz,10 A
答案:B
---Can I help you?
---Yes. I'd like a ticket to Mount Emei. Can you tell me ______ take to get there? [ ]
A. how soon will it
B. how soon it will
C. how long it will
D. how long will it
内毒素的毒性分子是()
A.脂蛋白
B.核心多糖
C.类脂A
D.特异多糖
E.磷脂