418÷24商是______位数,商的最高位是______位.
418÷24,因为41>24,所以商的最高位在十位上,商是两位数.
故答案为:两,十.
The reason _____ he refused to attend the meeting was that they didn't give him an invitation earlier.
A.how
B.why
C.which
D.that
矿井空气压缩机的主要组成部分是()。
A.供电设备
B.拖动设备
C.空气压缩机
D.输气管道
E.附属装置