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【单选题】
照射量的国际单位是（）。A.
伦琴
B.
库仑千克 -1
C.
千克 -1
D.
戈瑞
E.
希沃特
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【简答题】加注冷却水时,最好选择
【简答题】????????D ?Many people thought babies were not able to learn things until they were five or six month sold. But doctors now say babies begin learning on their first day of life. A baby will smile if h...
【单选题】A common character of the things used for money was that they________.
A.
were difficult to get
B.
had some practical use
C.
were considered valuable by all people
【单选题】18砖墙、37砖墙的构造尺寸分别为
A.
180mm 、 360 rnm
B.
185mm 、 365mm
C.
178mm 、 365mm
D.
180mm 、 365mm
【简答题】儿童语言习得一般经过 阶段和 阶段,这是儿童学话的关键两步。
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