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【单选题】
下列关于盐类水解的叙述正确的是A.
溶液呈中性的盐一定是强酸、强碱生成的盐
B.
含有弱酸酸根的盐的水溶液一定呈碱性
C.
盐溶液的酸碱性主要决定于形成盐的酸和碱的相对强弱
D.
碳酸溶液中氢离子的物质的量浓度是碳酸根离子物质的量浓度的两倍
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反馈参考答案：
举一反三
【单选题】An indirect flow of funds occurs when
A.
funds flow from saver-lenders toborrower-spenders through financial intermediaries.
B.
funds flow from saver-lenders to borrower-spendersthrough financial markets.
C.
funds flow to saver-lenders fromborrower-spenders through financial intermediaries.
D.
funds flow to saver-lenders fromborrower-spenders through financial markets.
【判断题】Flow regimes of steady-state flow 、 unsteady-state flow and pseudosteady-state flow can describe the fluid flow behavior and reservoir pressure.
A.
正确
B.
错误
【判断题】Streamline and Pathline are the same for steady flow, but different for unsteady flow.
A.
正确
B.
错误
【单选题】In the Solow growth model, the steady-state occurs when:
A.
capital per worker is constant.
B.
the saving rate equals the depreciation rate.
C.
output per worker equals consumption per worker.
D.
consumption per worker is maximized.
【判断题】three types of flow regimes are Steady-state flow , Unsteady-state flow , Pseudosteady-state flow.
A.
正确
B.
错误
【单选题】在F 系统中电话费收费方法通常采用的是_____。(130538:第5章 Inmarsat-F系统与设备) (A-0,B-0,C-0,D-0,错误-0)
A.
单向付费，谁呼叫谁付费
B.
双向收费
C.
单向付费，由对方付费
D.
包月
【单选题】Steady flow occurs when
A.
conditions do not change with time at any point
B.
conditions are the same at adjacent points at any instant
C.
conditions change steadily with the time
D.
dv/dt=const
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