A.50 B.75 C.100 D.124
A.求整數(shù)和小數(shù)之積 B.求整數(shù)和小數(shù)之商 C.求整數(shù)和小數(shù)之和 D.求整數(shù)和小數(shù)之差
A.一致 B.傾斜45° C.傾斜75° D.垂直