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【单选题】
原子吸收光谱法是基于从光源辐射出待测元素的特征辐射线的光,通过样品蒸气时,被待测元素( )的原子所吸收,由辐射特征谱线的减弱的程度,求出待测样品中该元素含量的方法。
A.
原子
B.
基态自由原子
C.
激发态原子
D.
离子
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【单选题】认识与分析营销环境的目的是()
A.
防患于未然
B.
寻求企业发展空间
C.
增强企业适应能力
D.
发现机会和识别威胁
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【单选题】Jenny, ___ called you just now when you were out.\ -- Thank you. It must be my mom.
A.
somebody
B.
anybody
C.
nobody
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【多选题】质根据分子结构分类,单纯蛋白质有( )。
A.
白蛋白
B.
球蛋白
C.
谷蛋白
D.
脂蛋白
E.
硬蛋白
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【单选题】Vita: ____________ called you a few minutes ago. He wouldn't leave his name.
A.
somebody
B.
everybody
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【单选题】( ) Somebody called you just now, but I didn’t know _____.
A.
who were they
B.
who they were
C.
who was it
D.
who it was
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【简答题】(请在空白处填空,有可能是句子,词组或单词,建议先写在白纸上,然后再输入学习通较为方便 ) Conversation Vocabulary and Phrases • Instead of “Where are you flying today?” the agent may ask “ 1_______? ” The answer will be the same! • You can say ...
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【单选题】_______ called you just now, but he didn’t tell me his name.
A.
Somebody             
B.
Anybody                 
C.
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【单选题】Somebody___Jack phoned while you were out. A.to call B.calling C.being called D.called
A.
to call
B.
calling
C.
being called
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called
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【简答题】弱读课前练习1.mp3 1. 听录音,把下面句子补充完整。 1)He ( ) English boy. 2)How and why ( ) come here. 3) I called you ( ). 4) I’ve looked ( ...
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【简答题】蛋白质根据分子结构分类,单纯蛋白质有( )。
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【单选题】认识与分析营销环境的目的是()
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【单选题】_______ called you just now, but he didn’t tell me his name.
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【单选题】Somebody___Jack phoned while you were out. A.to call B.calling C.being called D.called
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【简答题】蛋白质根据分子结构分类,单纯蛋白质有( )。
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