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【单选题】
Why did Steinway become the standard for grand piano manufacture throughout the world according to Para. 5 ?A.
Because its instruments had delicate touch and crisp tone.
B.
Because it was able to produce the largest number of instruments each year.
C.
Because it became the most popular brand in the world.
D.
Because its instruments were very durable.
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【单选题】The Mars having water, ______
A.
so it may have life
B.
and there may be life
C.
there may be life
D.
which may have life
【简答题】混凝土保护层应从钢筋的 算起
【单选题】Lidocaine比procaine作用时间长的主要原因是( )
A.
酰氨键比酯键不易水解
B.
Procaine有酯基
C.
Lidocaine有酰胺结构
D.
Lidocaine的中间部分较procaine短
【简答题】A．be satisfied B．have been satisfied C．may satisfy D．may have satisfied
【单选题】患儿，7个月。因肺炎合并心力衰竭，经治疗病情大有好转。 为适宜患儿养病，其病室的温度应保持在( )
A.
18℃～20℃
B.
22℃～24℃
C.
16℃～18℃
D.
24℃～26℃
E.
14℃～16℃
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