既能扩张支气管平滑肌,又能减轻支气管粘膜水肿的药物是
A.肾上腺素 B.吗啡 C.异丙肾上腺素 D.特布他林 E.氨茶碱
参考答案:D
It took us ____ to finish the new work.
A. three hour and a half B. three and a half hour C. three and a half hours
软件结构图的形态特征能反映程序重用率的是()
A、深度
B、宽度
C、扇入
D、扇出