判断题：强制密封是通过紧固端盖与筒体法兰之间的联结螺栓或接管与管道法兰之间的联结螺栓等强制方

题型：实验题

现要同时测电阻R₀的阻值、电源的电动势E及内阻r。给定的器材有：两个电压表和电流表，变阻器R₁，电阻箱R₂，待测的定值电阻R₀，两节串联的电池，开关S及导线若干。

（1）甲组同学设计一个如图（a）所示的电路能够同时测

电阻R₀、电源的电动势及内阻。调节变阻器，理想

电压表V₁、V₂和电流表A分别测得多组U₁、U₂、I

的数据，并作出U₁—I和U₂—I,图（b），并根据图线得到电源E的电动势为3V，则内阻为　▲　Ω。R₀为　▲　Ω。（结果保留两位有效数字）

（2）若甲组同学调节图（a）中变阻器的电阻为某值时使电压表V₂读数为1．5V后固定不动，然后将电阻R₀更换成一只“1．5V 0．9W”的小灯泡，若已知小灯泡的伏安曲线如图，则小灯泡的实际功率为 ▲ W。

（3）乙组同学在使用上述仪器的时候发现电流表已坏,不能够使用，但是，乙组同学在合理选择仪器也能够在同一电路中测出电阻R₀的阻值、电源的电动势E及内阻r，请在方框中画出乙组同学完成实验的实验电路图。

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题型：问答题

如图表示平行凸透镜的主光轴的两束光从左边入射凸透镜，F是凸透镜的焦点，请在图中画出这两束光通过凸透镜后的折射光线．

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题型：单项选择题 A型题

阳水水湿浸渍的治法是（）

A.化湿清热利水

B.化湿利水，补脾益气

C.运脾化湿，通阳利水

D.益气健脾，行气运湿

E.温运脾阳，以利水湿

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题型：问答题简答题

股票流通市场的分类有哪些？

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题型：单项选择题

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.

The underlined word "they" in Paragraph 2 refers to ______.

A．publishers

B．poems

C．children

D．black people

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强制密封是通过紧固端盖与筒体法兰之间的联结螺栓或接管与管道法兰之间的联结螺栓等强制方

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