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【简答题】
Do you always understand the directions on a bottle of medicine? Do you know what is meant by 'Take only as directed'? Read the following directions and see if you understand them. 'To reduce pain, take two tablets(药片)with water, followed by one tablet every eight hours, as required. For night-time and early morning relief take two tablets at bedtime. Do not take more than six tablets in twenty-four hours. For children six to twelve years old, give half the amount. For children under six years old, ask for your doctor's advice. Reduce the amount if you suffer from restlessness or sleeplessness after taking the medicine. 小题1:How many tablets at most can a person over 12 have in 24 hours? A.Eight B.Six C.Four D.Three 小题2:How many tablets should a nine-year-old child normally take in 24 hours? A.Half a tablet. B.One tablet. C.Two tablets . D.Four tablets. 小题3:What is the advice for one who cannot sleep well after taking the medicine? A.Stop taking the medicine at bedtime. B.Take less than the normal amount. C.Take more than the normal amount. D.Continue to take the normal amount. 小题4:It can be inferred from the directions that this medicine . A.helps you to fall asleep quickly B.should not be taken by children under six C.cannot be taken if one feels sleepy D.may be dangerous to small children
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举一反三
【单选题】欲对全班 43个学生以二进制代码编码表示,最少需要二进制码的位数是
A.
5
B.
6
C.
8
D.
43
【单选题】吗啡的呼吸抑制作用是因为( )。
A.
激动丘脑内侧的阿片受体
B.
降低呼吸中枢对血液二氧化碳张力的敏
C.
激动中枢盖前核的阿片受体
D.
激动脑干的阿片受体
E.
激动蓝斑核的阿片受体
【多选题】在管壳式换热器内,冷热流体的流动通道可依据以下原则中的()选择。
A.
不洁净和易结垢的液体宜走管程,因管内清洗方便
B.
腐蚀性流体宜在管程,以免管束和壳体同时受到腐蚀
C.
压强高的流体宜在管内,以免壳体承受压力
D.
饱和蒸气宜走壳程,因饱和蒸气较清净,给热系数与流速无关而且冷凝液容易排出
E.
被冷却的流体宜走壳程,以便于散热
F.
若两流体的温度差较大时,要使传热系数较大的流体走壳程,以使管子和壳体的温度较为接近,减少热应力
G.
流量小的流体应走管程,从而提高流速,增大传热系数。但若流体的量虽少而黏度却很大,则应走壳程,因在壳程中流体的流向和流速多次改变,在较低雷诺数下即可达到湍流
【判断题】在列管式换热器中,压强高的流体宜走管内,以免壳体受压可节省壳程金属消耗量。
A.
正确
B.
错误
【单选题】在管壳式换热器中,压强高的流体宜走( ),以免壳体受压,可节省壳程金属消耗量。
A.
管内
B.
管间
C.
管径
D.
管轴
【判断题】上学年体质测试成绩没有达到合格,可以参加学校的各类评优、评奖。
A.
正确
B.
错误
【单选题】吗啡的呼吸抑制作用是因为()。
A.
激动丘脑内侧的阿片受体
B.
降低呼吸中枢对血液CO 2 张力的敏感性
C.
激动中枢盖前核的阿片受体
D.
激动脑干的阿片受体
E.
激动边缘系统的阿片受体
【单选题】吗啡的呼吸抑制作用是因为()
A.
激动丘脑内侧的阿片受体
B.
降低呼吸中枢对血液二氧化碳张力的敏感性
C.
激动中枢盖前核的阿片受体
D.
激动脑干的阿片受体
E.
激动蓝斑核的阿片受体
【单选题】影响潜育期长短的最主要的环境因素是
A.
湿度
B.
光照
C.
温度
D.
降雨量
【判断题】影响病害潜育期长短的最主要的环境因素是温度。
A.
正确
B.
错误
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