B (x<y)AND( y<z)C (x<y<z)D(x<y & y<z
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答案:
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1.B (x
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2.关于x≥y≥z的正确C语言表达式是()。A、(x>=y)&&(y>=z)B、(x>=y) AND (y>=z)C、(x>=y>=z)D、(x>=z)&(y>=z)
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3.在Z B . X > Z > Y C . Z > Y > X D . Y > X > Z
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4.B (x<= y)and(y<=z)A、(x<=y<=zB、(x<=y)&(y=z)
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5.设 |x z|<|y|(x,y,z∈R),则 A.|x|>|z|-|y| B.|x|>|y|-|z| C.|x|<|z|-|y| D.|x|<|y|-|z|
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6.x)P(x,y)∧(?x)(Q(x,z)?(?x)(?y)R(x,y,z))中量词?x的辖域是( )A、(Q(x,z)?(?x)(?
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7.已知x y≠,x≠z,y≠z,且 ,则必有[ ]A、x=B、y=C、z=D、xyz=
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8.x=3; y=5; z=x; x=y; y=z; print('x=', x, 'y=', y)
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9.Using DeMorgan’s Law, write an expression for the complement of F if F(x,y,z) = xy xz yz.
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10.调试下面程序,并认真分析输出结果及运算过程#include "stdio.h"
main()
{
int x,y,z;
x=y=z=0;
++x&&++y||++z;
printf