(1)56÷79=56×97=72;
(2)60÷150=60150=25.
故答案为:72,25.
_______________ your hands before the meal. [ ]
A. Washing
B. Washed
C. To wash
D. Wash
余隙容积过大或过小对活塞式压缩机的工作有什么影响?