如图A-10-45-15甲所示的电路，不计电表内阻的影响，改变滑动变阻器的滑片位置，测得电压表V₁和V₂随电流表A的示数变化的两条实验图象，如图乙所示，关于这两条实验图象，有    (  )

A．图线b的延长线一定过坐标的原点O

B．图线a的延长线与纵轴交点的坐标值等于电源的电动势

C．图线a、b交点的横坐标和纵坐标值的乘积等于电源输出功率

D．图线a、b交点的横坐标和纵坐标值的乘积等于电阻R₀消耗的电功率

A client with iron-deficiency anemia is prescribed liquid iron supplements. The nurse teaches the client's about how to take this drug. Which of the following statements by the client indicates that the education is effective

A．"I will report any black stools to the physician. "

B．"I will dilute the medication and drink it with a straw. "

C．"I will check my gums for any bleeding. "

D．"I can use antidiarrheal drugs if I develop diarrhea. "