有60只灯泡,每盏吊灯需装7只灯泡.这些灯泡可以装几盏吊灯?还剩几只灯泡?
60÷7=8(盏)…4(只),
8
760
564;
答:这些灯泡可以装8盏吊灯,还剩4只灯泡.
I think students should _____ to have at least one hour a day for sports. That's good for their health.[ ]
A. allow
B. not allow
C. be allowed
D. not be allowed
心电图中的T波反映()
A.心房肌去极化
B.心房肌复极化
C.心室肌去极化
D.心室肌复极化
E.窦房结激动