[单项选择]可引起粒细胞缺乏症的是（）
A. 哌替啶
B. 芬太尼
C. 吗啡
D. 曲马朵
E. 安乃近

[单选题]1990年伊拉克入侵科威特导致原油价格短时间内大幅上涨，这是影响原油价格的( )因素。
A.白然
B.地缘政治和突发事件
C.OPEC的政策
D.原油需求

[单选题]钢件或铝合金工件钻孔时，一般选用(　　)作冷却液。
A.煤油
B.柴油
C.汽油
D.乳化液

[单选题].BF004更换阀门倒流程放空泄压时，应先关上、下游阀门，再开放空阀进行泄压。
A.正确
B.错误

[单项选择] Drug Overuse ① Nowadays,millions of people misuse and even overuse pain medications and other drugs. Research by the American National Institute on Drug Abuse （NIDA， 1999） shows that around 2% of the population over age 12 were using drugs non-medically. ② NIDA views medications as a powerful force for good in the contemporary world. They reduce and remove pain for millions of people suffering from illness and disease. They make it possible for doctors to perform complicated surgery to save lives. Many people afflicted by serious medical conditions are able to control their symptoms and become active， contributing citizens. NIDA points out that most individuals who take these drags use them in a responsible. ③ Nevertheless， overuse of drugs such as opioids， central nervous system（CNS） depressants and stimulants does lead to harmful reliance in some people and is therefore becoming a serious public health concern. Although this abuse affects many people worldwide， particular trends of concern to the medical profession in the US appear among older adults， teenagers arid women. ④ Though it may be a surprise to many， the misuse of medications may be the most common form of drug abuse among the elderly. Dr Kenneth Schrader of Duke University， North Carolina states that although the elderly represent about 13% of the US population， those aged 65 and over account for the consumption of one third of all drugs. People in this age group use medications roughly three times more than the general population and have poorer compliance with instruction for use. In another study of elderly patients admitted to treatment programs， 70% were women who had overused medicines. ⑤ Unfortunately， this trend among women does not only affect those aged over. In general， among women and men who are using either an anti-anxiety drug or a sedative， women are twice as likely to become addicted. In addition， statistics compiled for 12 —17 year olds show that teenage girls are more likely than teenage boys to begin overusing psychotherapeutic medication such as painkillers， tranquillizers， stimulants and sedatives. Among women and men who are using either an anti-anxiety drug or a sedative， the former are twice as likely to（）.
A. teenage boys
B. from diseases
C. get addicted
D. the record of medicines overusing
E. use instruction
F. are alien and utterly foreign

[单项选择]干式自动喷水灭火设备适用于供暖期超过( )的不供暖房间和温度在70℃以上的场所。
A. 120天
B. 150天
C. 180天 D．240天