适用于哮喘急性发作的药物是（） A．肾上腺素 B．色甘酸钠 C．酮替芬 D．沙美特罗

持天府通卡出站时卡内余额不足，乘客需到车站“（）”办理充值业务后，持（）出站；或在购买出站票后免费更新原卡，持（）出站。

计算题：某台固体物料过筛机，需筛分物料100吨，经实测得出不可筛过物的质量为30吨，最得出筛分过产品50吨，求该设备过筛效率为多少？

一本连环画2元5角，比一本故事书便宜1元5分，一本故事书多少钱？

调度系统运行人员收到中调下发的预令后，应在（）内予以回复确认，如认为预令不正确或存在疑问，应当立即通过调度电话向值班调度员汇报。

A.半小时

B.一小时

C.两小时

D.三小时

A client exhibits confusion and severe memory loss. At 11:30 AM, he tells the nurse that he is going to work and proceeds to walk toward the door. Which of the following actions should be the nurse take()

A. Remind him that he retired from his job 10 years ago.

B. Tell him that she’ll accompany him for a short walk outdoors.

C. Divert his attention toward the dining room where lunch is being served.

D. Tell him that he does not have to go to work today.