当手接触冰水混合物中的冰和水时,觉得冰比水冷,这是因为 [ ]
A.冰的传热本领比水好很多
B.冰的温度比水低
C.冰熔化要吸热
D.冰的质量比水大一些
答案:C
It is reported that the railway _____ now will cut the journey time between the two cities by about 12 hours.
A.built
B.to be built
C.having built
D.being built
运行下列程序段后,显示的结果为( )。 J1=23 J2=32 If J1<J2 Then Print J2 Else Print Jl
A.23
B.32
C.55
D.2332