关于狭义货币的正确表述是（） A.包括现钞和银行活期存款 B.包括现钞和准货币 C.

胆总管和胰管共同开口于（）

A.肝总管

B.胆总管

C.十二指肠 * *

D.肝内胆管

E.壶腹括约肌

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下列有关城市各项污染源与其造成的恶果对应正确的是（   ）

A．汽车尾气——光化学烟雾工业废气——酸雨工业废水——“公害病”

B．汽车尾气——酸雨工业废气——“公害病”工业废水——光化学烟雾

C．汽车尾气——“公害病”工业废气——酸雨工业废水——光化学烟雾

D．汽车尾气——光化学烟雾工业废气——“公害病”工业废水——酸雨

Although a given waveform may contain frequencies over a very broad range, as a practical matter any transmission system will be able to accommodate only a limited band of (86) . This, in turn, limits the data rate that can be carried on the transmission (87) A square wave has an infinite number of frequency components and hence an infinite (88) However, the peak amplitude of the kth frequency component, kf, is only l/k, so most of the (89) in this waveform is in the first few frequency components. In general, any digital waveform will have (90) bandwidth. If we attempt to transmit this waveform as a signal over any medium, the transmission system will limit the bandwidth that can be transmitted.

（88）是（）

A.source

B.bandwidth

C.energy

D.cost

下列选项中，应定为洗钱风险级别为高风险的客户有（）。

A．无正当理由频繁与境外机构和个人发生资金往来的客户

B．一年内频繁办理借贷及结清手续的客户

C．故意规避大额资金监测的客户

D．经常存入境外开立的旅行支票，与经营状况不符的客户