风机联锁顺序是什么？
参考答案：
高压流化风机、引风机、二次风机、一次风机、播煤增压风机（点火增压风机、冷渣风机）
Our family makes it a________to turn off the television at mealtime and try to speak as little
as possible.[ ]
A．privilege
B．pressure
C．procedure
D．principle
除哪项症状外本病都可出现
A．肝脾肿大
B．精神神经症状
C．肾脏症状
D．失明
E．血液系统症状
ossible.[ ]