尿脱落细胞学检查阳性的是
A.肾结石B.肾结核C.肾肿瘤D.肾下垂E.肾水肿
参考答案:B
——Can you go to the Great Wall with us next week?
—___________.[ ]
A. Yes, I can't
B. Sure, I'd love to
C. Sorry, I don't
D. No, I can
投资乘数是投资增加量与投资引起的收入的增加量之间的比率。 ( )