【简答题】浇注温度的高低,对()影响很大。温度过高,会使铸件产生()等缺陷;温度过低,容易产生()等缺陷。
【单选题】Suppose there is no file Hello.txt in the current directory. Run the program: ( )import java.io.*;public class ABC {public static void main(String argv[]) throws Exception {ABC m=new ABC();System.ou...
C.
No such file found, Doing finally,
D.
No such file found, Doing finally, 0
【简答题】计算:(2x) 3 =( );(x 2 y 3 ) m =( )。
【单选题】急性化脓性骨髓炎行局部引流的原则,是
C.
临床诊断已经明确,抗生素治疗数日无效即行引流手术
【简答题】(1)3(a 3 ﹣a 2 b+ ab 2 )﹣ (6a 3 +4a 2 b+3ab 2 ) (2) (2x 3 y) 3 (﹣7xy 2 )÷(14x 4 y 3 ) (3)(m+2n)(2m﹣n) (4)(2x﹣ y) 2 (5)899×901+1(用乘法公式)
【简答题】计算:(1) ; (2)2x 5 (2x﹣2y) 2 ﹣(x 3 y 2 ) 2 ÷x 5 y 2 ; (3)(m+n)(m 2 ﹣mn+n 2 ); (4)(2m+1﹣3n)(2m﹣1+3n).
【简答题】import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import j ava.io.IOException ; public class Test { public static void main(String[] args ) { File file = new File( ...
【简答题】计算:(1)2(m+1) 2 ﹣(2m+1)(2m﹣1); (2)4x 2 ﹣(2x+3)(2x﹣3); (3)先化简,再求值.[(x+2y) 2 ﹣(x+y)(3x﹣y)﹣5y 2 ]÷2x,其中x=﹣2,y= .
【单选题】抛物线y 2 =2x上点A、B到焦点的距离之和为5,AB中点为M,则M点到y轴的距离为( ) A、5