纳税人住所、经营地址迁移及改变原主管税务机关的( )。
A．开业登记 B．变更登记 C．注销登记 D．外出经营报验登记
参考答案：C
—My wife tries her best to do everything for our children.
—That's exactly I disagree.
A．what
B．how
C．when
D．where
《铁路信号维护规则》对信号设备熔断器有何规定？
