[ A] diffusing [ B] transmitting [ C] transiting [ D] delivering
[ A] diffusing
[ B] transmitting
[ C] transiting
[ D] delivering
[ A] diffusing
[ B] transmitting
[ C] transiting
[ D] delivering
第1题
Which of the following statement about the diffusion of atoms, molecules or ions is NOT correct?
A) The rate of diffusion will decrease with an increase in temperature.
B) A lattice structure that contains loosely packed atoms (less dense) will offer greater resistance to diffusing atoms than one whose structure contains tightly packed atoms.
C) The stronger the bonding forces between the atoms the more difficult for the atoms to diffuse.
D) Smaller permeating atoms stand better chance of diffusion through a structure oflarger atoms.
第7题
A.int a,b;scanf("%d,%d",&a,&b);printf("a=%2d,b=%2d",a,b);
B.int a,b;scanf("%d %f",&a,&b);
C.int a,b;scanf("a=%d,b=%d",&a,&b);printf("a=%d,b=%d",a,b);
D.int a,b;scanf("%2d%2d",&a,&b);printf("a=%d,b=%d",a,b);
第9题
判断字符串a和b是否相等,应当使用( )。
(A)if(a==b) (B)if(a=b)
(C)if(strcpy(a,b)==0) (D)if(strcmp(a,b)==0)