皮皮学，免费搜题
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【单选题】
3*14.某学者为探讨某药物对某病的疗效,选取了120例该病患者,随机分为服用该药的治疗组和使用标准疗法的对照组,随访观察时,观察者与患者均不知道两组接受的情施,一个月后观察疗效,结果治疗组60名患者中有40人有效,对照组60名中有20人有效,经统计学检验,两组差异具有统计学意义。该研究采用的盲法为A.
双盲
B.
单盲
C.
随机盲法
D.
没有盲法
E.
三盲
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】— How are you feeling? — Much better.
A.
You look great.
B.
Thanks for coming to see me.
C.
Don't mention it.
【判断题】The Germans prefer a firm handshake, which is seen as a symbol of strength and character.
A.
正确
B.
错误
【判断题】Germans prefer to leave their doors open to show welcome and friendliness.
A.
正确
B.
错误
【判断题】Germans prefer clear, firm, and assertive expression while the Japanese encourage covert, fragmented expressions.
A.
正确
B.
错误
【判断题】Germans value privacy very much and therefore prefer farther interpersonal distance.
A.
正确
B.
错误
【判断题】Germans prefer clear, firm, and assertire expression while the Japanese encourage covert, fragmented expressions.
A.
正确
B.
错误
【单选题】Germans prefer clear, firm, and assertive expression while the Japanese encourage covert, fragmented expressions.
A.
True
B.
False
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