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【单选题】
双侧电源线路的重合闸装置,可采用()检测线路无电压启动自动重合闸,另一侧检测同步启动自动重合闸。A.
一侧
B.
双侧
C.
每侧
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【简答题】On va en Europe pour passer le Nouvel An.
【简答题】In the world today, all of the people need recreation (消遣). We cannot work all the time if we are going to keep healthy and enjoy life. Everyone has his own way of relaxing. Perhaps the most popular f...
【单选题】We are told that the colonists did not need the British after the Treaty of Paris, because the former______.
A.
were independent
B.
didn't like to pay taxes
C.
made a treaty with the French
D.
didn't need protection from an enemy
【单选题】In the final analysis, when viewed in the national perspective, the effects on agriculture are the most troublesome aspect of desertification in US. For it comes at a time when we are losing over a mi...
A.
both the world and America need the land for agricultural aims.
B.
they bring about a large amount of waste of resources
C.
Americans do not need that many shopping centers and apartments
D.
industrial parks and waste dumps are seriously polluting the environment
【简答题】Questions 36 to 40 are based on the following passage. In the United States, the need to protect plant and animal species has become a highly controversial and sharply political issue since the passag...
【简答题】In the world today, all of the people need recreation（消遣）. We can not work all the time if we are going to keep healthy and enjoy life. Everyone has his own way of relaxing. Perhaps the most popular f...
【多选题】对控制器的编程通常有三种方式：一是 [填空(1)] ；二是 [填空(2)] ；三是 [填空(3)] 。
A.
利用安装在中央管理工作站的编程软件编写、调试程序，通过网络配置控制器和下载程序到控制器上
B.
通过PC机或笔记本经串口或USB端口连接到控制器，并调用装在控制器上的编程工具对控制器进行配置、编程调试
C.
通过与控制器配置的手操器对控制器直接操作和编程 。
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