【简答题】计算和化简求值 (1)已知:|a|=3,b 2 =4,ab<0,求a﹣b的值. (2)已知:A﹣2B=7a 2 ﹣7ab,且B=﹣4a 2 +6ab+7, ①求A等于多少? ②若|a+1|+(b﹣2)2=0,求A的值. (3)已知A=by 2 ﹣ay﹣1,B=2y 2 +3ay﹣10y﹣1,且多项式2A﹣B的值与字母y的取值无关,求(2a 2 b+2ab 2 )﹣[2(a 2 b﹣1)+3ab 2...
【多选题】下列各项,关于 “预收账款”描述正确的有( )。
A.
“预收账款”账户属于负债类账户,用以核算企业按照合同规定预收的款项
B.
“预收账款”账户贷方登记企业向购货单位预收的款项等
C.
“预收账款”账户借方登记销售实现时按实现的收入转销的预收款项等
D.
“预收账款”账户期末余额在贷方,反映企业预收的款项;期末余额在借方,反映企业已转销但尚未收取的款项
【简答题】已知3a 2x-1 b和-2a 3 b是同类项,那么x=______.
【简答题】________ before we depart the day after tomorrow, we should have a wonderful dinner party. A) Had they arrived B) Would they arrive
【单选题】It was in writing The Spanish Tragedy that W. Shakespeare set up the pattern for the revenge tragedy.
【判断题】「報・連・相」を通してみんなから今何を考え、何を行っているのか教えてもらわないと、上司も状況判断ができません。
【单选题】骨科护士对本科室油砂条进行灭菌,应该实行的灭菌法是
【判断题】零件的实际偏差只要小于公差,零件的尺寸就合格。
【简答题】Our tragedy today is a general and universal physical fear so long sustained by now that we can even bear it. There are no longer problems of the spirit. There is only the question: when will I be blo...