5-10.As
for the number of invariant points, the system can be divided into
corresponding sub-triangles, that is, the number of sub-triangles is
equal to the number of invariant points. ()
for the number of invariant points, the system can be divided into
corresponding sub-triangles, that is, the number of sub-triangles is
equal to the number of invariant points. ()
举一反三
- 5-1.In the ternary system CaO-Al2O3-SiO2,<br/>there are 8 eutectic points, 7 double-peritectic<br/>points and 9 saddle point. According to phase rule, at most, it can<br/>be divided into ____sub-triangles A: 8个 B: 7个 C: 9个 D: 15个
- According to the algorithm mentioned in the video, how many triangles can be composed using 10 points on a plane?<br/>根据上面的算法，平面上10个点将会构成多少个三角形？ <br/>______
- 对于如下关于随机数的代码[br][/br]for(int number = 0; number != 5; number = (int)(Math.random() * 10)) { [br][/br] System.out.println(number); [br][/br] }[br][/br]以下描述正确的是( )(2分)[br][/br] [br][/br](4.0) A: 执行时显示数字永不停止 B: 执行时显示数字0后停止 C: 执行时显示数字5后停止 D: 执行时显示数字直到number为5后停止
- ___________ of<br/>the students in this school is 2000, and ____________ of them are<br/>girls. A: The number; first<br/>fourth B: The number; one fourth C: A number; one second D: A number;<br/>three quarters
- ISSN是( )。[br][/br]·(2.0) A: “国际标准连续出版物号”<br>· B: International Standard System Number<br>· C: International Standard Book Number<br>· D: International Standard Serial Numbe