What's the best present you have ever _____?[ ]
A. received
B. receives
C. receiving
答案:A
办案人员询问戒毒人员,应当在强制隔离戒毒所的询问室进行。
精馏岗位蒸汽中断,精馏塔工艺参数变化状况是()。
A、塔釜液位上升,塔温下降
B、塔釜液位上升,塔压上升
C、塔釜液位下降,塔压上升
D、塔釜液位下降,塔温上升