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【单选题】
为 了降低CT辐射剂量,哪项 不是 扫描方式优化的有效措施 ( )A.
降低管电压
B.
降低管电流
C.
增加探测器数量
D.
增大螺距
E.
降低管电流 量
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举一反三
【简答题】________ you met the foreigner from Canada? A. Where it was that B Who it was that C. Where was it that D. Where was that
【单选题】The accident to the man who to be a foreigner, so it was hard to deal with.
A.
occurs; happened
B.
happened ;occurred
C.
came about; occurred
D.
occurred ;happened
【简答题】How will the tax be determined if a foreigner resident who has worked in China for more than 183 days? He should be subject to ______.
【单选题】The accident ________ to the man who _________ to be a foreigner, so it is hard to deal with. [ ]
A.
occurs; happened
B.
happened; occurred
C.
came about; occurred
D.
occurred; happened
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