机舱控制室和救生艇站应配备足够数量的救生衣。()
参考答案:对
— Can’t you act like a gentleman?
— ________. A gentleman can’t buy the nice and cheap things among such a group of crazy women.
A.No, never
B.Sorry, I won’t
C.Yes, never
D.Yes, I can
已知函数y=f(x)的图象与函数y=2x+1(x>0)的图象关于直线y=x对称,则( )
A.f(x)=log2x-1(x>2)
B.f(x)=log2x-1(x>0)
C.f(x)=log2(x-1)(x>2)
D.f(x)=log2(x-1)(x>0)