把4米长的彩带剪成同样长的8段做装饰,每段彩带长多少分米?
4米=40分米
40÷8=5(分米)
The sports shoes _________ ¥128. [ ]
A. is on sale
B. are on sale
C. are on sale for
D. is on sale for
制图题:画出同步发电机励磁回路绝缘电阻测量原理图。