什么是票据承兑？
参考答案：
票据承兑是指建设银行接受承兑申请人的付款委托，承诺在汇票到期日对收款人或持票人无条件支付汇票金额的票据行为。
A company purchases a truck with a useful life of 5 years. The cost was $100000 with an estimated salvage value of $10000. Using the double declining balance method and the sum of the years’ digits method, what is the depreciation in year 2 Double-DecliningSum of Years’ Digits ①A. $ 40000$ 24000 ②B. $ 24000$ 45000 ③C. $ 24000 $ 24000
A．
B．
C．
求函数z=3xy-x3-y3的极值点．
