单项选择题

(1,1,0)是平面上的点。
A、正确
B、错误

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单项选择题
Organic nitrogen is converted back to inorganic nitrogen like ammonium through the process of ()
A、Denitrification
B、Nitrogen fixation
C、Decay
D、Nitrification
问答题
Accounting provides financial information that is only useful to business management.（）
答案：正确答案：错误
单项选择题
Which one of heart sounds should be heard in healthy adult? ( )
A．S1+S2
B．S1+S2+S3
C．S1+S2+S4
D．S1+S2+S3+S4
E．S3+S4
单项选择题
对称三相电源的三相电压之和加起来等于零。
A、正确
B、错误
问答题
The accounting process generates financial reports for both “internal” and “external” users.（）
答案：正确答案：正确