如果截平面为正垂面或侧垂面(需画出左视图)时,用()法求实形。
A.求实长
B.变换投影面
C.直角三角形
D.旋转
参考答案:B
给下列句子排列顺序。
( ) What should you do then?
( ) First, I dig a hole in the soil.
( ) Put the tree in the hole and fill it with soil.
( ) I'm going to plant a tree.
( ) How do you do that?
补钾速度一般每小时不宜超过()。
A.10mmol
B.20mmol
C.30mmol
D.40mmol
E.50mmol