自动低频减负荷装置配置整定时,要求自动低频减负荷装置动作后,应使运行系统稳态频率恢复

题型:单项选择题

问题:

自动低频减负荷装置配置整定时,要求自动低频减负荷装置动作后,应使运行系统稳态频率恢复到不低于( )。

A.49.8Hz;
B.49.7Hz;
C.49.6Hz;
D.49.5Hz。

考点:注册电气工程师发输变电专业继电保护、安全自动装置及调度自动化
题型:单项选择题

词汇运用 根据括号中中文提示或英语单词将句子补充完整。(15分)

小题1:My brother is in a _____________(小学)school in the south of the town.

小题2:How do you _____________(感觉)when you see an old friend of yours on the street?

小题3:Suguo Supermarket is _____________(在……对面) Dongfang Shopping Mall.

小题4:I seldom had breakfast _____________(以前). Now I know it is bad for my health.

小题5:Simon, look at your _____________(腹部). You are getting fatter and fatter.

小题6:Xinghua is in the _____________(north) part of Taizhou and it is my hometown.

小题7:It is _____________(possible) for you to be a top student in your class without hard work. So you must study hard now.

小题8:Our country ____________(take) many actions to look for the plane since MH370 got lost.

小题9:Can you give me some _____________(advice) about how to learn English well?

小题10:You must _____________(finish) your homework today.

小题11:This summer holiday my family are going to some _____________(Europe) countries.

小题12:Can you tell me what _____________(read) this weekend?

小题13:If you keep _____________(try), I am sure you will work out the problem.

小题14:I have to use the desk _____________(reach) the box.

小题15:—Has Ma Yan arrived at our town?

—Yes. He _____________(arrive) here two hours ago.

题型:单项选择题

2007年12 月 13 日南京隆重举行集会悼念30万同胞遇难70周年。70年前的今天,日本侵略军在南京制造了骇人听闻的南京大屠杀,那一幕幕惨绝人寰的悲剧让人们内心的伤痛至今难以平息,并呼唤着人们正视历史,珍惜和平。记住历史,忘记仇恨。

结合上述材料,运用所学的知识回答:

(1)试从政治学角度分析70年前的悲剧对我们有哪些警示?(4分)

(2)记住历史,忘记仇恨。请从哲学角度分析之。(6分)

题型:单项选择题

驾驶机动车在这种情况下要尽快加速通过。

题型:单项选择题

说明磷有哪些营养功能。

题型:单项选择题

“不为卿相,不复回国”,是谁在离家时,对他母亲说的话?

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