在无分支电路中，当导线长度越小时，通过导线的电流是（）。
A.越大
B.越小
C.匀均
参考答案：A
Knowledge and learning are important if we want to be successful but they may also ____ our thinking.
[ ]
A. direct
B. limit
C. change
D. improve
简述类风湿关节炎的临床表现
