抑菌
参考答案：
抑菌是指用抑菌剂抑制体内或体外细菌生长繁殖的方法。
银行本票可以用于转账，也可以用于支取现金。 ( )
Being examined twice a year is the rule that every driver obey in the city．
A．shall
B．can
C．ought to
D．need
