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【简答题】
目前应用较多的是()载体。
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【简答题】根据下列材料，请回答题某市某项目2号栋发生QTZ63B（TC5013）塔机回转上支座以上部分倒塌事故，塔机于2008年1月1经过××建筑机械质量监督检验中 心检验并投入使用。2008年12月13日早上8：15时在装卸完第一吊混凝土，空罐顺时钟回转时，塔机回转上支座连接螺栓前方四个全部断裂，上支座以上 部分向后倾翻坠落。起重臂端部砸到3号栋南边SCD施工升降机顶端的标准节上。回转上支座与回转塔身分离...
【单选题】Tom ______________ playing compute games, doesn’t he?
A.
are
B.
is
C.
enjoys
D.
wants
【单选题】Once the fire fighters had come to George’s rescue_____________.
A.
George had his arm greased and was able to get it out of the drain
B.
George took his fire fighters and got some chocolate at the sweet shop
C.
the lady who had failed to rescue George gave him a box of chocolates
D.
George was rewarded by the owner of the sweet shop for his trouble
【单选题】The fire _______ before the fire-fighters arrived．
A.
has been put out
B.
was put out
C.
had put out
D.
had been put out
【简答题】Tom wants a cup of tea. 提示: 用doesn't+动词原形改否定句。
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