令 f-1(14)=a
则f(a)=2a3•2a+1=14.
即 2a=1
∴a=0
故答案为0
Arriving at a bus stop ______ the vehicle pulling away just a few minutes ago is quite annoying.
A.to find
B.finding
C.found
D.to be finding
一氧化碳中毒防治的关键是()
A.眼结膜损伤
B.咽喉炎
C.肺炎
D.肺水肿
E.脑水肿