在同一电压恒定的电路中，电阻值R增大时，电流就会随之（）
A.减小
B.增大
C.不变
D.非线性变化
参考答案：A
An analyst does research about net profit margin. A company has only fixed rate debt outstanding and reports its debt using the fair value option. Which of the following statements is most accurate when market interest rates decrease（）
A. The company's net profit margin decreases.
B. The company's net profit margin remains the same.
C. The company's net profit margin increases.
乐队的效果比一个人表演效果（）。
A.差
B.好
C.没差别
