【多选题】在国际结算中使用的本币资产也可以称为外汇,但这种外汇必须具备下列()性质。
A.
必须经过中央银行和政府,或具有官方职能的机构、企业所签订的协议而形成
【简答题】A more precise term for acid rain is______, which has two parts: wet and dry.
【单选题】Any acid can, in principle, neutralize any base, although ______ between some of the more reactive compounds.
A.
side reactions can occur
B.
the occurrence of side reactions can
C.
can side reactions occur
D.
side reactions that can occur
【单选题】Acid rain means the precipitation in the form. of rain, snow or hail which is more acidic than normal.
【单选题】结束计算机应用程序不正确的操作是( )。
【多选题】在国际结算中使用的本币资产也可以称为外汇,但这种外汇必须具备下列哪些性质。( )
A.
必须经过中央银行和政府,或具有官方职能的机构、企业所签订的协议而形成