允许用隔离开关拉合励磁电流不超过（）的空载变压器、电抗器。A.5A B.4A C.3

伸直型肱骨髁上骨折，常见的并发症是

A．神经血管的损伤

B．肱骨下段缺血坏死

C．坠积性肺炎

D．脂肪栓塞

E．骨折局部感染

研究发现铜具有独特的杀菌功能，能较好地抑制病菌的生长。工业上铜冶炼大致可分为：

①富集：将硫化物矿石进行浮选；

②焙烧，主要反应为：2CuFeS₂+4O₂→Cu₂S+3SO₂+2FeO(炉渣)；

③制粗铜，在1200℃主要的反应为：2Cu₂S+3O₂→2Cu₂O+2SO₂；2Cu₂O+Cu₂S→6Cu+SO₂↑；

④电解精炼，在阴极得到精铜。

下列说法不正确的是

A．上述生产过程中的尾气可以通入氨水中，生产氮肥

B．电解精炼时，粗铜应与外电源的正极相连

C．反应2Cu₂O+Cu₂S→6Cu+SO₂↑中的Cu₂Ｏ是氧化剂

D．每生产6mol Cu，理论上需消耗11mol O₂

课时计划就是教案。

常与熔点较高的蜡类制成稠度适宜的基质的是（）

A.麻油

B.羊毛脂

C.液状石蜡

D.硅酮类

E.蜂蜡

Washington: The Bush administration has ________for the first time that it may be willing to ________a multinational force in Iraq to operate under the ________of the United Nations as long as ________by an American. The idea was described by Richard L. Armitage, the deputy secretary of state, as just "________" in discussions at the United Nations. It was first ________publicly last week by Kofi Annan, the United Nations’’ secretary general.Mr. Armitage’’s remarks, made ________to regional reporters and released by ________today, represent ________in course for the administration, which has until now insisted that all ________matters in Iraq remain under total American control. Allowing the United Nations ________would be intended to win the support of the Security Council for ________authorizing the ________ occupation of the country.In his remarks, Mr. Armitage ________to discuss the plans________, saying, "I don’’t think it helps to ________publicly right now." But he described the arrangement under consideration as "a multinational force________" in which "the American would be the U.N. commander."On Monday, Defense Secretary Donald H. Rumsfeld was asked whether he could ________American troops fighting_______. His answer: "I think that’’s not going to happen." But he went on to rule out only "________" meaning by the United Nations, whose troops wear blue helmets over a peacekeeping force in Iraq.