- ______ is it going, Jane?
- It's great! I like the party so much.
A:What
B:How
C:Which
D:Where
(2016•全国)如图,网格纸上小正方形的边长为1,粗实线画出的是某多面体的三视图,则该多面体的表面积为( )
①(2a-3)(3a-1)=6a2-11a+3;②(m+n)(n+m)=m2+mn+n2;③(a-2)(a+3)=a2-6;④(1-a)(1+a)=1-a2.
关于比热容,下列说法中正确的是( )