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【单选题】
方程 y [ k ]= f [ k ]cos[2 k ] 所描述的系统为( ) 。A.
非线性时不变因果系统
B.
线性时变因果系统
C.
非线性时变非因果系统
D.
线性时变非因果系统
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【判断题】If the importer is responsible for the insurance, the exporter should provide the insurance policy after effecting the shipment.
A.
正确
B.
错误
【单选题】若有以下函数定义,则执行函数 func(9) 调用后,其返回值是 ( ) 。 int func(int x) { int p; if(x==0||x==1) return 1; p=x-func(x-2); return p; }
A.
1
B.
5
C.
9
D.
7
【简答题】A．somewhere B．anywhere C．nowhere D．everywhere
【判断题】If the importer is responsible for the insurance, the exporter should provide the insurance policy.
A.
正确
B.
错误
【简答题】when the traders discuss the time of shipment in the contract，the exporter should consider whether he can get the goods ready before the shipment date and whether the ship is available if the goods ar...
【单选题】When traders set the time for shipment in a contract, the exporter should consider whether he can get the goods ready before the shipment date and whether the ship is available if the goods are ready....
A.
正确
B.
错误
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