慢性肾衰竭控制高血压首选()
A.钙拮抗药
B.ACEI
C.β-受体阻滞剂
D.α-受体阻滞剂
E.利尿药
参考答案:B
This question is _______ more difficult than that one [ ]
A. many
B. much
C. very
D. a few
种子干燥时可采用日晒法的是()
A、松类种子
B、栎类种子
C、肉质果类种子
D、特小粒种子