题目描述:
一项工程,甲队独做要10天,乙队独做要8天,甲乙工作效率的比是( )A. 10:8
B. 5:4
C.
1 |
8 |
1 |
10 |
D.
1 |
10 |
1 |
8 |
答案解析
【答案】1 |
10 |
1 |
8 |
=4:5;
故选:D. 【其他答案】
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