体内释药缓慢，能延长药效的丸剂是（）
A.水丸
B.蜜丸
C.滴丸
D.蜡丸
E.浓缩丸
参考答案：D
The first edition ________ in 1955 and ________ a best seller ever since．
A．was published；had been
B．was published；has been
C．has been published；has been；
D．had been published；had
彩色多普勒技术不可以与下了哪种技术并用
A．二维超声显像B．频谱多普勒C．心脏超声造影D．M型超声心动图E．以上都不是
