题目

Being able to speak another language fluently is a great     when you are looking for a job． A．advantage    B．chance    C．assistant   D．importance 答案：A有R1和R2两个电阻，且R1＞R2，将它们分别接到同一电源两端，要使电路中的总电流最大，连接方法应该是（ ）A．只接R1B．只接R2C．R1和R2串联D．R1和R2并联