《几何原本》中,（）是其第三条定义。
A: A line is breadthless length.
B: A point is that which has no part.
C: A straight line is a line which lies evenly with the points on itself.
D: The ends of a line are points.
A: A line is breadthless length.
B: A point is that which has no part.
C: A straight line is a line which lies evenly with the points on itself.
D: The ends of a line are points.
举一反三
- A line chart or line graph is a type of chart which displays information as a series of data points called 'markers' connected by straight line segments.
- （）has three specific points: fixed line and announcing shipping time in advance.
- A line has no thickness, only length anddirection.
- 下面代码中，没有定义内部类或者错误定义了内部类的是（）。 A: public Class Line { int length; Class Point {//内部类代码}} B: public Class Line { public Point getPoint() { return new Point(){//内部类代码}; }} C: public Class Line { //外部类代码} Class Point {//内部类代码} D: public Class Line { public int calcLength() { Class Point {//内部类代码} }}
- which of the following requirements for extension line is correct? A: it should be draw by bold solid line B: about 2 mm from the contour line C: a bout 2 mm beyond the dimension line D: Other lines in the drawing should not be used as the extension line. E: about 2-3mm in length