炉条机转速调节的依据有哪些？

材料一　我们认为奴隶制是道德上一个极大的错误，尽管并不要求有权在它存在的地方触动

它，但希望在我们的选票所能及的各准州把它当作一个错误对待。我们认为，由于对我们自

己尊重，对后代和创造我们的上帝负责，需要我们在我们的选票所能及的地方纠正这个错误，

我们认为那种性质的劳动会损害自由白人。总之，我们认为奴隶制是道德上、社会上和政治

上的一个祸害，之所以还要忍耐，仅仅因为它的实际存在使我们必须对它忍耐，越出这个范

围就必须把它当作错误对待。

——引自林肯1860年3月在康涅狄格州的演说

材料二 对于奴隶制的扩展决不能主张妥协。你一妥协，他们就又爬到我们头上来了，

我们的一切努力，就会付诸流水，早晚还得重头做起。……我认为宪法关于逃亡奴隶的条款

必须用最温和的方式实行，决不可加以抵制。

——引自林肯1860年12月给威廉·凯洛的复信

材料三 我在这场斗争中的最高目标是拯救联邦，而既不是保全奴隶制，也不是摧毁奴

隶制。如果我能拯救联邦而不解放任何一个奴隶，我愿意这样做；如果为了拯救联邦需解放

所有的奴隶，我愿意这样做；如果为了拯救联邦需要解放一部分奴隶而保留另一部分，我也

愿意这样做。

——引自林肯1862年8月给霍勒斯·格里利的信

回答：

(1)根据材料一指出林肯对待奴隶制的基本态度和主张。   

(2)对比材料一与材料二，林肯在哪些具体问题上态度有差别?他所遵循的原则是什么？   

(3)材料三说明林肯在内战中的基本原则是什么?这原则与解放奴隶是什么关系?

(4)对上述材料所反映的林肯的立场和观点，你作何评价?

监理项目部在收到业主项目部提供的施工图纸后，应开展（）工作。

A.熟悉施工图，进行施工图预检

B.收集规程、规范

C.召开开工会

D.准备变更单

I arrived in London at last. The railway station was big, black and dark. I did not know the way to my hotel, so I asked a porter(搬运工).  I not only spoke English very carefully, but very clearly as well.The porter, however, could not understand me. I repeated my question several times and at last he understood. He answered me, but he spoke neither slowly nor clearly. “I am a foreigner”, I said. Then he spoke slowly, but I could not understand him. My teacher never spoke English like that! The porter and I looked at each other and smiled. Then he said something and I understood it. “ You’ll soon learn English!” he said. It seems to me that in England each man speaks a different language. The Englishman understand each other, but I don’t understand them! Do they speak English?

小题1: How did the writer of the passage get to London?

A．By train

B．On foot

C．By sea

D．By air小题2:What country did the writer of the passage come from?

A．England

B．Ameica

C．France

D．We don’t know小题3:Why couldn’t the porter understand the writer when he spoke English?

A．Because he was a foreigner.

B．Because the porter could only understand the London dialect (方言).

C．Because he spoke not British English but American English.

D．Because he couldn’t speak idiomtic (地道的) English.小题4:“In England, each man speaks a different language.” The writer thinks so because_________________.

A．some people speak English, while others don’t.

B．he does not understand native(本国的) speakers of English

C．not every Englishman speaks English

D．each Englishman can speak several foreign languages

屋架下弦截面为120mm×200mm，如图所示，木料为马尾松，下弦接头处N=90kN，屋架下弦用双剪连接。螺栓连接承载力的计算系数K_v=6.1，若螺栓采用φ20的螺栓，试问接头处接头所需的最少螺栓数目为（）。

A．3

B．4

C．5

D．6

1岁小儿，其体重前半年每个月平均增长

A．200～300g

B．300～400g

C．500～600g

D．400～500g

E．600～800g