【单选题】the arrows show which cell?
【单选题】the arrows show which cell?
【单选题】The blue arrows in the figure show【图片】
【简答题】电路如图所示,C点接地,已知ε 1 =2.15V,r 1 =0.1Ω;ε 2 =1.9V,r z =0.2Ω;ε 3 =5V,r 3 =1Ω;R 1 =R 2 =2Ω.试求: (1)各支路中的电流; (2)A、B两点间的电势差; (3)A点的电势.
【单选题】which structure the arrows show?
B.
diffuse lymphoid tissue