经济均衡既可表示为总需求与总产出相等,又可表示为实际投资与储蓄相等。()
参考答案:错
The shipment time is June or July atour()and the good swill be shipped in one().
A.choice,shipment
B.option,lot
C.decision,cargo
D.option,consignment
分组入选的条件有哪些?有哪些弊端?