【单选题】与总价合同计价方式相比较,单价合同的特点是( )。
【单选题】在施工进度上能极大地调动承包人的积极性是( )合同。
【简答题】求图示电路 戴维南等效电路,求得的开路电压为( )V,等效电阻为( )。
【单选题】I always _____ sick when I travel by ship.
【简答题】电路如下图所示,为求得RL能获得的最大功率,求得ab二端网络的戴维南等效电路的开路电压为 V。【图片】
【单选题】Which statements about real and nominal interest rates is correct?
A.
When the nominal interest rate is rising, the real interest rate is necessarily rising; when the nominal interest rate is falling, the real interest rate is necessarily falling.
B.
If the nominal interest rate is 4 percent and the inflation rate is 3 percent, then the real interest rate is 7 percent
C.
An increase in the real interest rate is necessarily accompanied by either an increase in the nominal interest rate, an increase in the inflation rate, or both.
D.
When the inflation rate is positive, the nominal interest rate is necessarily greater than the real interest rate
【单选题】I get seasick when I travel ——ship.
【单选题】When the space ship was ____, I could really feel the high gravity.
【单选题】My detective work finally led me to the ship I found Godfrey.A.whichB.thatC.whereD.when
A.
My detective work finally led me to the ship ____ I found Godfrey. A.which
【简答题】为了求下图a的戴维南等效电路,可以先将电路做局部等效使内部结构得到一定程度的化简,如图b所示。继而可以针对图b求其戴维南等效参数UOC和Req,如图d所示。对图b求端口开路电压UOC时,应注意端口处于开路状态,此时对网孔列KVL,可以求得UOC=____V;为求图b的输入电阻Req,可将图b内部的独立电源置零,即将电压源的位置用短路代替,如图c所示,可求得Req=_____Ω。