【单选题】The rider uses ( ) as a means of communicating their wishes through to the horse.
【简答题】如图5—11(a)所示,有一长为150km的110kV输电线路,线路单位长度参数为r=0.21Ω/km,x=0.401Ω/km,b=2.84×10-6S/km。线路末端接一台容量为31.5MVA的降压变压器,变比为110/111kV,变压器参数为△Pk=190kW,Uk%=10.5,△P0=31.05kW,I0%=0.7。当A点实际电压为118kV时,求B点和C点的实际电压以及元件的电压降落。
【单选题】FX2N系列可编程序控制器梯形图规定串联和并联的触点数是()。
【单选题】Which of the following is not true?
A.
The rider helped the farmer.
B.
The rider didn't ask. the farmer for money.
C.
The rider wanted the farmer to help anyone else in trouble.
D.
The rider wanted some wheat.
【单选题】学生在参加野外植物考查时,发现了一种不认识的植物,该植物花冠呈“十字形”,进一步观察发现其花具有四强雄蕊,则该植物最可能是()植物。
【单选题】工序质量特性控制图中,上、下控制界限与中心线(CL)相对距离是标准偏差(σ)的
【简答题】The rider uses the wake the board _________ in the water launch into the air.
【单选题】电路及参数如图所示,T 1 、T 2 、T 3 均为硅管,可调电阻R E2 当前调节到的阻值为1.3KΩ,设β1=β2=50,β3=80,| V BE |=0.7V,当| V i |=0时时| V o |=0。当输入为0时,图中 I E 、 I C1 、 I C2 、 I C3 分别为()
A.
1.062mA, 0.531mA, 0.531mA, 1.21mA
B.
1mA, 0.5mA, 0.5mA, 1mA
C.
2.4mA, 1.2mA, 1.2mA, 2.63mA
【简答题】v. to take as a fact; to suppose