当流体温度升高时,流体的密度将()。
A、不变
B、增大
C、变小
参考答案:C
— Would you mind me _____?
— _____. Do it as you like please. [ ]
A. to play the piano, Good idea
B. playing the piano, Of course not
C. playing the piano, Of course
D. play the piano, All right
下列免疫分子具有特异性作用的是()
A.Ab
B.IL-1
C.IL-2
D.IFN
E.TNF