一般所说的安全生产法律法规都是由全国人民代表大会颁布的。（）
参考答案：错
下列有关螺内酯利尿作用的叙述，正确的是（）
A.利尿作用强
B.起效慢而持久
C.拮抗醛固酮受体
D.排Na+留K+
E.对醛固酮增多性水肿疗效好
—Mum, could I have a MP3 like this?
—Certainly, we can buy _____ one, but as good as this. [ ]
A. a cheap
B. a cheapest
C. a cheaper
D. the cheapest
