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【单选题】
《勃兰登堡协奏曲》的作曲者是A.
巴赫
B.
亨德尔
C.
海顿
D.
蒙特威尔第
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【单选题】电气火灾造成的损失在全部火灾中占据首要位置。电气设备的危险温度电火花及电弧是引起电气火灾的直接原因。下列电气线路和电气设备的状态中，可能引起电气火灾的是( )。
A.
绝缘电线表面温度达到50℃
B.
电线绝缘层内导体(芯线)受到损伤后有效截面变小
C.
运行中电动机的温度和温升都达到额定值
D.
白炽灯泡表面烫手
【单选题】测定砂浆强度等级时的试块的尺寸是（）。
A.
100*100*100mm
B.
150*150*150mm
C.
200*200*200mm
D.
70.7*70.7*70.7mm
【简答题】A．She didn't like novels until she went to college. B．She would rather read novels than history books. C．She enjoyed the class even though the teacher was poor. D．Her study of literature spoiled her e...
【单选题】重量分析法测定Ba 2+ 时，以H 2 SO 4 作为Ba 2+ 的沉淀剂，H 2 SO 4 立过量( )。
A.
1%～10%
B.
20%～30%
C.
50%～100%
D.
100%～150%
【简答题】Look at the title of the passage and read the first paragraph. Check (✓) the point(s) you expect the writer to make in the passage.A. Men can teach small children just as easily as women can. B. Men f...
【简答题】有一组混合砂浆试块，标准养护28天后受压，承受的压力平均为35000N。问此试块的强度等级是否满足M5的要求。试块的尺寸为7.07cm×7.07cm×7.07cm。
【多选题】Look at the title of the passage and read the first paragraph. Check (✓) the point(s) you expect the writer to make in the passage.
A.
Men can teach small children just as easily as women can.
B.
Men find it hard to teach small children.
C.
People don’t expect men to teach small children.
D.
Women don’t think men should teach small children.
E.
It isn’t easy for men to make a career as a teacher of small children.
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