第2题:[单选题]12.Which is not an official reserve asset of the U.S.? A.A.U.S.holdings of Special Drawing Rights B.B.The U.S.reserve position in the International Monetary Fund C.C.Foreign official holdings of U.S.dollars D.D.Official holdings of foreign currencies by U.S.monetary authorities 参考答案:C
第24题: [多项选择]肾癌CT的征象为 A. 肾形扩大,肿瘤向肾外突出 B. CT值密度比肾实质略低,而增强时明显低于肾实质 C. CT值密度-10 ~15HU D. 增强扫描时明显高于肾实质 E. 常为双侧病变 参考答案:A,B 答案解析:[解题思路] 肾癌的CT征象是A和B。CT值一般不会含有负值,另外其一般为单侧病变。