A:甲的比热容比乙大
B:甲的比热容比乙小
C:甲和乙的比热容相同
D:刚开始加热时,甲和乙的比热容为零
下列有关凸透镜的说法不正确的是
Miss Zheng always says that it's important for us to _______ the test paper first before we write down the answers.