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【单选题】
Rebecca became famous for______.A.
her science program
B.
her pictures and books
C.
reaching the top of Mount Everest
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【单选题】普通最小二乘法要求模型误差项 u i 满足某些基本假定,下列结论中错误的是
A.
E(u i )=0
B.
E( )=
C.
E(u i u j )=0
D.
u i ～ N(0. σ 2 )
【单选题】下列关于投标保证金的有关解释中正确的是( )。
A.
投标保证金数额一般为投标报价的10%左右
B.
投标保证金数额最高不得超过80万元人民币
C.
投标保证金有效期应超出投标有效期60天
D.
如果投标报价最低,不提交投标保证也可不作为废标
【单选题】Food calories come only from its potential energy such as the carbohydrates, protein and fat.
A.
Y
B.
N
C.
NG
【单选题】By 'if the fuel isn't there, the spark is useless', the author means______.
A.
carbohydrates, protein and fat are enough to sustain a human life
B.
vitamins and minerals are virtually of no value
C.
carbohydrates, protein and fat are as important as vitamins and minerals
D.
without carbohydrates, protein and fat, vitamins and minerals are of no use
【单选题】某女，3岁。过敏体质，既往有哮喘病史，1小时前因吸入油漆而出现哮喘急性发作，对该患者应选用
A.
吸入倍氯米松
B.
吸入色甘酸钠
C.
吸入沙丁胺醇
D.
口服麻黄碱
E.
口服氨茶碱
【单选题】Sleepiness ()(发生) after having bread or rice, and other such carbohydrates.
A.
occurs
B.
occupies
C.
recalls
D.
reviews
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