无环流逻辑控制器的任务是确保正组晶闸管和反组晶闸管不会()。
参考答案:同时开放
读下图,回答1~3题。
1.图中浊水溪注入[ ]
A.渤海
B.台湾海峡
C.黄海
D.琼州海峡
2.据图分析,影响台湾岛气温递变的最主要因素是[ ]
A.纬度因素
B.海陆因素
C.地形因素
D.人为因素
3.下列美称属于台湾的是[ ]
A.天府之国
B.森林之海
C.水能宝库
D.购物天堂
The nurse is caring for a client who recently underwent a tracheostomy. The first priority when caring for a client with a tracheostomy is()
A. helping him communicate.
B. keeping his airway patent.
C. encouraging him to perform activities of daily living.
D. preventing him from developing an infection.