多项式x2-y2+xy-1是______次______项式.
多项式x2-y2+xy-1是二次四项式,
故答案为:二,四.
易产生过度镇静的抗精神病药物是()
A.利培酮
B.奥氮平
C.氟哌啶醇
D.氯丙嗪
E.舒必利
All of the following can be a motivation to change the depreciation method for financial reporting purposes EXCEPT:()
A. debt covenants attached with accounting results.
B. an increase in cash flows.
C. management compensation contracts which are based on reported net earnings.