高血压合并支气管哮喘者不宜选用的药物是（）
A．普萘洛尔
B．可乐定
C．卡托普利
D．肼屈嗪
E．氢氯噻嗪
参考答案：A
Packet-switching wireless networks are preferable (1) when transmissions are (2) because of the way charges are (3) per packet. Circuit-switched networks are preferable for transferring large files or for other lengthy transmissions because customers are (4) for the (5) of time they use the network.
2（）
A．long
B．short
C．large
D．small
气雾剂的质量检查不包括（）
A.泄漏率
B.溶化性检查
C.每瓶总揿次
D.爆破检查
E.喷射速率
