大写字母“A”的.ASCII码值为65,那么ASCII码值为68的字母是()。
A.B
B.C
C.D
D.E
参考答案:C
In order to finish the research, the professor always _______, for every day the light in hisroom didn’t go out until 4 a.m.
A.mixed up
B.cleaned up
C.turned up
D.stayed up
现有可逆反应A(g)+2B(g) nC(g)(正反应放热),在相同温度、不同压强时,A的转化率跟反应时间(t)的关系如图所示,其中结论正确的是( )
A.p1>p2,n>3
B.p1<p2,n>3
C.p1<p2,n<3
D.p1>p2,n=3