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【判断题】
当牵连运动为平移时,则相对加速度等于相对速度对时间的一阶导数。A.
正确
B.
错误
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举一反三
【简答题】The residues after in wastewater the liquid potion has been evaporated and the remainder dried to a constant weight at 1030C.
【单选题】The amino acid residues that can form disulfide bonds in protein molecules are( )
A.
Methionine residues
B.
Asparagine residue
C.
oxime amino residue
D.
cysteine residues
【单选题】After doing that for a few weeks, I was hooked.
A.
I was only interested in doing that after a few weeks.
B.
I became really interested in doing that after a few weeks.
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