简述伯努利方程的适用条件。
参考答案:
①稳定流;
②液流所受的质量力只有重力;
③不可压缩液体;
④缓变流断面;
⑤流量沿流程不变;
⑥液体在运动过程中没有能量输入或输出。
男,60岁。每于上楼时出现胸闷3天,含服硝酸甘油2分钟可缓解。8小时前再次出现上述症状,向左上肢和后背放射,为持续性,伴上腹胀痛和恶心、呕吐,含服硝酸甘油无缓解。该患者首选的辅助检查是()
A.心电图
B.胸部X线片
C.冠状动脉造影
D.超声心动图
E.胃镜
Because antianxiety agents such as chlordiazepoxide (Librium) can potentiate the effects of other drugs, the nurse should incorporate which of the following instructions in her teaching plan()
A. Avoid mixing antianxiety agents with alcohol or other central nervous system (CNS) depressants.
B. Avoid taking antianxiety agents at bedtime.
C. Avoid taking antianxiety agents on an empty stomach.
D. Avoid consuming aged cheese when taking antianxiety agents.