雷击时,避雷针构架对其它设备或导线放电,称为()。
A、绕击过电压
B、雷击过电压
C、反击过电压
D、大气过电压
参考答案:C
按给出的要求变换下列句子,每空限填一词。
1. He was sleeping when the UFO arrived. (对划线部分提问)
________ was he ________ when the UFO arrived?
2. Both Linda and Kate are good at English. (改为同义句)
Both Linda and Kate ________ well ________ English.
3. Jane said she was having a party for Lanan. (改为直接引语)
Jane said, "I ________ ________ a party for Lana."
4. Jim said,"I can speak three language." (改为间接引语)
Jim said ________ ________ speak three languages.
5. Will kids go to school? (作否定回答)
________, they ________. They'll study at home.
发展对于全面建设小康社会、加快推进社会主义现代化建设具有决定性意义。加快生产力发展必须全面提高劳动者的素质,这是因为()
A.社会主义根本任务是发展生产力
B.人是生产力中最具决定性的力量
C.科技是先进生产力的集中体现
D.科学技术是第一生产力