问题 解答题
5
12
÷(0.75+
2
3
)×6.8
答案

5
12
÷(0.75+
2
3
)×6.8,

=

5
12
÷
17
12
×6.8,

=

5
17
×6.8,

=2.

单项选择题 A1/A2型题
判断题