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【单选题】

A.
B.
C.
D.

A.
逻辑变量X、Y进行逻辑“异或”(用表示)运算的含义是:若X、Y取值相同(都为true或都为false),则XAY的值为false,否则XY的值为true。用逻辑“与”(∧)、“或”(∨)、“非”(-)表示XY的式子为()
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【单选题】以下关于汇编语言和汇编指令的叙述中,正确的是()

A.
汇编语言程序中只能包含CPU可直接识别的汇编指令
B.
一条汇编指令可以没有操作码字段,但是必须具有操作数字段
C.
汇编语言源程序都是通过对某高级语言源程序进行编译而得到的
D.
一条汇编指令可以没有操作数字段,但是必须具有操作码字段

【单选题】其中第②个问题在()阶段解决。 A.信息系统总体规划 B.信息系统分析 C.信息系统设计 D.信息系统实施

A.
在信息系统建设中,为了使开发出来的目标系统能满足实际需要,在着手编程之前应认真考虑以下问题: 
B.
①系统所要求解决的问题是什么 
C.
②为解决该问题,系统应干些什么 
D.
③系统应该怎么去干 
E.
其中第②个问题在()阶段解决,第③个问题在()阶段解决。

【单选题】GWhat were the demonstrators protesting about() A.Private profits. B.The nuclear power station. C.The project of nuclear power construction. D.Public peril.

A.
G
B.
The police fired tear gas and arrested more than 5,000 passively resisting protestors Friday in an attempt to break up the largest antinuclear demonstration ever staged in the United States. More than 135,000 demonstrators confronted the police on the construction site of a1,000-megawatt nuclear power plant scheduled to provide power to most of Southern New Hampshire. Organizers of the huge demonstration said that the protest was continuing despite the police actions. More demonstrators were arriving to keep up the pressure on state authorities to cancel the project. The demonstrator had charged that the project was unsafe in the densely populated area, would create thermal pollution in the bay, and had no acceptable means for disposing of its radioactive wasters. The demonstrations would go on until the jails and the courts were so overloaded that the state judicial system would collapse.
C.
Governor Stanforth Thumper insisted that there would be no reconsideration of the power project and no delay in its construction set for completion in three years. "This project will begin on time and the people of this state will begin to receive its benefits on schedule. Those who break the law in misguided attempts to sabotage the project will be dealt with according to the law," he said. And the police called in reinforcements from all over the state to handle the disturbances.
D.
The protests began before dawn Friday when several thousand demonstrators broke through the police lines around the cordoned-off construction site. They carried placards that read "No Nukes is Good Nukes," "Sunpower, Not Nuclear Power," and "Stop Private Prof-its from Public Peril. " They defied police order to move from the area. Tear gas canisters fired by the police failed to dislodge the protestors who had been prepared with their own gas masks or facecloths. Finally the gas-masked and helmeted police charged into the crowd to drag off the demonstrators one by one. The protestors did not resist the police, but refused to walk away under their own power. Those arrested would be charged with unlawful assembly, trespassing, and disturbing the peace.
E.
 

【单选题】GWith whom were the jails and courts overloaded() A.Prisoners. B.Arrested demonstrators. C.Criminals. D.Protestors.

A.
G
B.
The police fired tear gas and arrested more than 5,000 passively resisting protestors Friday in an attempt to break up the largest antinuclear demonstration ever staged in the United States. More than 135,000 demonstrators confronted the police on the construction site of a1,000-megawatt nuclear power plant scheduled to provide power to most of Southern New Hampshire. Organizers of the huge demonstration said that the protest was continuing despite the police actions. More demonstrators were arriving to keep up the pressure on state authorities to cancel the project. The demonstrator had charged that the project was unsafe in the densely populated area, would create thermal pollution in the bay, and had no acceptable means for disposing of its radioactive wasters. The demonstrations would go on until the jails and the courts were so overloaded that the state judicial system would collapse.
C.
Governor Stanforth Thumper insisted that there would be no reconsideration of the power project and no delay in its construction set for completion in three years. "This project will begin on time and the people of this state will begin to receive its benefits on schedule. Those who break the law in misguided attempts to sabotage the project will be dealt with according to the law," he said. And the police called in reinforcements from all over the state to handle the disturbances.
D.
The protests began before dawn Friday when several thousand demonstrators broke through the police lines around the cordoned-off construction site. They carried placards that read "No Nukes is Good Nukes," "Sunpower, Not Nuclear Power," and "Stop Private Prof-its from Public Peril. " They defied police order to move from the area. Tear gas canisters fired by the police failed to dislodge the protestors who had been prepared with their own gas masks or facecloths. Finally the gas-masked and helmeted police charged into the crowd to drag off the demonstrators one by one. The protestors did not resist the police, but refused to walk away under their own power. Those arrested would be charged with unlawful assembly, trespassing, and disturbing the peace.
E.