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【单选题】
女孩5岁，其母患结核性胸膜炎，故来体检，双肺听诊呼吸音粗，胸部透视未见异常。欲做"OT"试验1．1：2000OT稀释液0．1ml内含结素单位为（）A.
0.1单位
B.
1单位
C.
2单位
D.
5单位
E.
10单位
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举一反三
【简答题】I have written to
my pen pal (笔友) and now I’m ______ his letter. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> (2.0分)A. looking
for B. looking
after C. looking
forward to D. ...
【简答题】I have written to her because she phoned me shortly afterwards. (couldn't, needn't)A. needn't
【单选题】I have written to her because she phoned me shortly afterwards. (couldn't, needn't)
A.
couldn't
B.
needn't
【单选题】( ) your address, I would have written to you.
A.
Did I know
B.
Were I to know
C.
Had I known
D.
If I should know
【简答题】在工程机械设备上,电源系统由的 、 、相关线路等组成。
【简答题】工程机械电源系统由 、 、 、 相关线路等组成。
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