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问题
单项选择题
我国利润表采用的是( )结构。
A．复杂式
B．简单式
C．单步式
D．多步式
答案
参考答案：D
选择题
How tired you look! You _____ these weeks. I think you need a holiday before you burn out.
A. had overworked
B. overworked
C. have been overworking
D. were overworked
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填空题
FOCKE408条盒透明纸包装机日保养要求清洁透明切割装置的输送辊和（）。
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