确定社区优先解决的卫生问题时，主要考虑的方面是（）。
A.问题的普遍性
B.严重性
C.紧迫性
D.可干预性
E.以上均是
参考答案：E
局麻药实用浓度较理论上最低麻醉浓度（）
A.基本相等
B.大1倍左右
C.大2倍左右
D.大5倍左右
E.大7倍左右
The argument that term structure of interest rates is determined by expectations about future interest rates and a yield premium for interest rate risk is most closely associated with the:（）
A. expectations hypothesis.
B. liquidity preference theory.
C. market segmentation theory.
