材料的微观结构包括晶体、玻璃体及胶体等，其中晶体的特点有( )

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问题多项选择题

材料的微观结构包括晶体、玻璃体及胶体等，其中晶体的特点有( )。

A．导热性高

B．各向异性

C．有固定熔点

D．一定的几何外形

E．化学稳定性

答案

参考答案：B,C,D,E

单项选择题

有以下程序：void f(int *x,int *y){int t;t=*x;*x=*y;*y=t;}main(){int a[8]={1,2,3,4,5,6,7,8},i,*p,*q;p=a;q=&a[7];while(p

A．8,2,3,4,5,6,7,1,

B．5,6,7,8,1,2,3,4,

C．1,2,3,4,5,6,7,8,

D．8,7,6,5,4,3,2,1,

选择题

__ girl dropped into that well yesterday.

__ I’m sorry to hear that. I know it is_________. .[ ]

A. A 6 years old; 20-metre-deep

B. A 6 -year-old; 20 meters in depth

C. A 6-years -old; 20 meters deep

D. A 6-year- old; 20 meter deep