DS6-K5B型计算机联锁系统,控显机双机与联锁机的两重系,通过()构成交叉互联的冗余关系。
参考答案:光分路器
—Hi, Daming. It’s said the famous singer will come to Tai’an. Do you know ______?
—Next month.
A.when does he come
B.when he comes
C.when will he come
D.when he will come
爆破器材的临时保管地点,必须经当地有关部门批准,()同时保管与爆破器利无关的物品。
A.严禁
B.可以
C.必须