药物治疗不必作为首选方法的疾病是（）
A.急性应激障碍
B.创伤后应激障碍
C.适应障碍
D.器质性精神障碍
E.恐惧症
参考答案：C
A client reveals to the nurse that he’s sexually impotent. Which statement best expresses what the nurse should understand her client to mean（）
A. He’s disinterested in sexual intimacy.
B. He’s unable to attain or retain an erection.
C. His ejaculate is void of sperm.
D. His semen isn’t potent enough to impregnate.
石油产品的火灾危险性主要有哪几方面？
