生理性鼻甲周期的一个周期为（）。 A.0.5～1h B.2～7h C.7～12h D

Carmen, _____ on a literary masterpiece, is a well-known classical opera in Europe.  [ ]

A. base

B. to base

C. basing

D. based

An 8-year-old child enters a health care facility. During assessment, the nurse discovers that the child is experiencing the anxiety of separation from his parents. The nurse makes the nursing diagnosis of Fear related to separation from familiar environment and family. Which nursing intervention is most likely to help the child cope with fear and separation ？（）

A．Ask the parents not to visit the child until he has adjusted to the new environment.

B．Ask the physician to explain to the child why he needs to stay in the health care facility.

C．Explain to the child that he must act like an adult while he’s in the facility.

D．Have the parents stay with the child and participate in his care.

货币属性的正确说法是______。

A．货币是商品

B．货币是一般等价物

C．货币是信用工具

D．货币是价值载体

患者，女，30岁。外出感寒，左肩臂痛，难以抬肩，遇风则疼痛加剧，舌苔薄白。宜首选的药物是（）

A.独活

B.威灵仙

C.羌活

D.桑寄生

E.秦艽

由真空表测得真空度为40Kpa，其绝对压力约为（）。