TYJL-ADX型计算机联锁系统除故障切换、人工切换之外,还具有()切换方式。
参考答案:定时
Because this area has a high rate of crime and unemployment, there are only people moving out.
A.incentive
B.incident
C.incidence
D.initiative
一般情况下,增值税征税的税率高,为17%,而退税税率低,其中有()。
A、4%
B、5%
C、13%
D、17%