【单选题】闭合导线测内角时角度闭合差的分配原则是反符号按( )分配。
【单选题】高压控制盒相当于一个高压电闸,工作时通过( )来控制电流的通断.
【单选题】Lying between machine languages and high-level languages are languages which called _______ .
【简答题】下列程序的输出结果【 】。 define PR(ar)printf('ar=%d',ar) main() { int j,a[]={1,3,5,7,9,1l,13,1},*p=a+5; for(j=3;j;j--) switch(j) { case 1: case 2:PR(*p++);break; case 3:PR(*(--p));}}
【单选题】How long did Thoreau live in the woods of Walden Pond?
C.
One year and one month.
D.
Two years and two months.
【单选题】阿基米德数Ar是决定射流弯曲程度的主要因数,则在冷射流时( )。
【单选题】Mr. Brown doesn't think that all bad languages should be allowed. In his opinion, there are ______ that should be kept up.