调控中心是变电站设备监控信息专业管理的归口部门,参与涉及变电站设备监控信息的()。A

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问题:

调控中心是变电站设备监控信息专业管理的归口部门,参与涉及变电站设备监控信息的()。

A、设计审查

B、安装调试

C、出厂验收

D、设备选型

考点:电网调度运行人员考试电网调度调控考试电网调度调控考试题库
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为测定某纯碱(Na2CO3)样品中(含有少量的氯化钠杂质)碳酸钠的质量分数,现称取6g试样放在烧杯中并滴入稀盐酸,当稀盐酸滴加至36.5g时,烧杯内溶液的总质量为40.3g(产生的气体全部逸出)。产生气体的质量与滴入稀盐酸的质量关系如图所示,试计算:

⑴A点产生气体的质量为        

⑵试样中碳酸钠的质量分数(结果精确到0.1%);

⑶B点时,烧杯内溶液中溶质的化学式                   

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如图所示电容器C,两板间有一负电荷q静止,使q向上运动的措施是(  )

A.两极板间距离增大

B.两极板间距离减小

C.两极板正对面积减小

D.两极板正对面积增大

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计算机按其性能可以分为5大类,即巨型机、大型机、小型机、微型机和

A.工作站

B.超小型机

C.网络机

D.以上都不是

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Phyllis Wheatley is regarded as America’s first black poet. She was born in Senegal, Africa, about 1753 and brought to America aboard a slave ship at about the age of seven. John and Susannah Wheatley bought her for three pounds at a slave auction in Boston in 1761 to be a personal servant of Mrs. Wheatley. The family had three other slaves, and all were treated with respect. Phyllis was soon accepted as one of the family, which included being raised and educated with the Wheatley’s twin 15-year-old children, Mary and Nathaniel. At that time, most females, even from better families, could not read and write, but Mary was probably one of the best educated young women in Boston. Mary wanted to become a teacher, and in fact, it was Mary who decided to take charge of Phyllis’s education. Phyllis soon displayed her remarkable talents. At the age of twelve she was reading the Greek and Latin classics and passages from the Bible. And eventually, Mrs. Wheatley decided Phyllis should become a Christian.
At the age of thirteen Phyllis wrote her first poem. She became a Boston sensation after she wrote a poem on the death of the evangelical preacher George Whitfield in 1770. It became common practice in Boston to have" Mrs. Wheatley’s Phyllis" read poetry in polite society. Mary married in 1771, and Phyllis later moved to the country because of poor health, as a teacher and caretaker to a farmer’s three children. Mary had tried to interest publishers in Phyllis’s poems but once they heard she was a Negro they weren’t interested.
Then in 1773 Phyllis went with Nathaniel, who was now a businessman, to London. It was thought that a sea voyage might improve her health. Thirty-nine of her poems were published in London as Poems on Various Subjects, Religious and Moral. It was the first book published by a black American. In 1775 Phyllis wrote a poem extolling the accomplishments of George Washington and sent it to him. He responded by praising her talents and inviting her to visit his headquarters. After both of her benefactors died in 1777, and Mary died in 1778, Phyllis was freed as a slave. She married in 1778, moved away from Boston, and had three children. But after the unhappy marriage, she moved back to Boston, and died in poverty at the age of thirty.

What does the passage mainly discuss

A.Slavery and the treatment of the black people in America.

B.The Wheatley family, including their slaves.

C.The life of America’s first black poet.

D.The achievements of Phyllis Wheatley.

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违反法律法规和政策规定,组织或引发罢运、围堵政府机关及管理机构等过激行为,严重扰乱社会公众秩序和损害社会公共利益的,考核等级定为()。

A.AA级

B.AAA级

C.A级

D.B级

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