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问题 单项选择题

不完全弗氏佐剂的成分是（）

A.液状石蜡

B.羊毛脂

C.卡介苗

D.液状石蜡及羊毛脂

E.液状石蜡、羊毛脂及卡介苗

答案

参考答案：D

解析：不完全弗氏佐剂是由液状石蜡与羊毛脂按1∶1～1∶5比例混合而成。

多选题

Q、W、X、Y、Z是原子序数依次增大的短周期元素，X的焰色反应呈黄色．Q元素的原子最外层电子数是其内层电子数的2倍．W、Z最外层电子数相同，Z的核电荷数是W的2倍．元素Y的合金是日常生活中使用广泛的金属材料之一，下列说法正确的是（　　）

A．氢化物稳定性：Z＞W

B．原子半径的大小顺序：rX＞rY＞rQ＞rW

C．元素Q和Z能形成QZ2型的共价化合物

D．X、Y的最高价氧化物的水化物之间不能发生反应
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单项选择题

Fernando Golpas and Javier Solada were reviewing the financial reports of several Latin American governments. They noticed that the central governments of many Latin American countries such as Argentina, Chile, Peru, and Ecuador had recently been issuing sovereign debt. This sparked a discussion between the two analysts about sovereign debt ratings. During their discussion they made the following statements: Golpas: The rating agencies, such as Moody’s, generally assign two ratings to sovereign debt. One is a local currency debt rating and the other is a foreign currency debt rating. The reason for the two ratings is that the default frequency has been greater on local currency denominated debt. Solada: If a central government is willing to raise taxes and control its internal financial system, it should be able to generate sufficient local currency to meet its local currency obligation. That is why the rating on local currency denominated debt is generally higher than the rating on foreign currency denominated debt. Are the statements made by Golpas and Solada regarding sovereign debt ratings correct Golpas Solada （）①A. Correct Correct ②B. IncorrectCorrect ③C. IncorrectIncorrect

A. ①

B. ②

C. ③
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