在算式9□3÷3,要使商中间有0,□可以填______.
根据根据整数除法的计算法则可知,
要使9□4÷3的商中间有0,
则□<3,即□里可以填0,1,2.
故答案为:0,1,2.
We need to put safeguards ______ to prevent this type of accident occurring again.
A.in mind
B.in trouble
C.in general
D.in place
.当内侧油箱油面低时
A、内油箱转换活门打开
B、每侧大翼内,各一个溢流活门打开
C、中央油箱的溢流活门打开
D、中央油箱的溢流活门关闭