【单选题】以下属于反映企业长期偿债能力的财务比率指标是( )
【单选题】An ideal dependent source is an element in which the source quantity is controlled by another voltage or current.
【单选题】A basic characteristic for an ideal independent voltage source is:
A.
the voltage across it has no relationship with the current flowing through it, the current can be any value and is decided by the source and the external circuit.
B.
the voltage across it has relationship with the current flowing through it, the current can ‘t be any value and is decided by the voltage source.
C.
the voltage across it has no relationship with the current flowing through it, the current can be any value and flows out from the positive terminal of the voltage source.
D.
the voltage across it has relationship with the current flowing through it, the current can be any value and may flow out of any terminal of the voltage source.
【判断题】An ideal voltage source is a circuit element that maintains a prescribed voltage across its terminals regardless of the current flowing in those terminals.
【多选题】对测绘工作而言,航空摄影测量可分为外业与内业工作两大部分。下列哪些是内业工作?
【多选题】对测绘工作而言,航空摄影测量可分为外业与内业工作两大部分。下列哪些是外业工作?
【单选题】( )不能在“工具”I“自定义”中定义。
【单选题】Assuming ideal op amps, what is the voltage gain and the input resistance?【图片】
【单选题】Ideal voltage amplifier