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【单选题】
在动物血压试验中,静脉注射肾上腺素,血压先升高后稍下降,注射酚妥拉明后,再次重复静脉注射肾上腺素,该血压变化是()A.
药物作用消失,血压无变化
B.
升压作用、降压作用均减弱
C.
升压作用消失,翻转为明显的降压
D.
药物作用不受影响
E.
升压作用、降压作用均增强
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【简答题】频繁地、经常地
【单选题】There are two factors which determine an individual's intelligence. The first is the sort of brain he is born with. Human brains differ considerably, some being more capable than others. But no matter...
A.
Measuring Your Intelligence
B.
Intelligence and Environment
C.
The Case of Peter and Mark
D.
how the Brain Influences Intelligence
【判断题】Since straight B/L bears higher risk than the open B/L, it is rarely used in international transportation.
A.
正确
B.
错误
【单选题】打电话时,反映出个人的品德和修养,可以给对方一个良好的印象,哪么打电话时,哪一点是不可取的
A.
尽快接听电话，最好铃声不超过三次
B.
如通话结束，受话人先将电话挂断
C.
通话时，注意力要集中
D.
一般情况下，不在清晨、午睡、深夜或用餐时间打电话
E.
学习、开会期间应关掉手机
【简答题】adv . 经常地;定期地
【判断题】Since straight B/L bears a higher risk than the order B/L, it is rarely used in international transportation.
A.
正确
B.
错误
【判断题】There are two explanations of constant opportunity costs: (1) factors of production are imperfect substitutes for each other; (2) all units of a given factor have different qualities.
A.
正确
B.
错误
【简答题】经常地
【判断题】Since straight B/L bears higher risk than the open B/L. it is rarely used in international transportation.
A.
正确
B.
错误
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