车站必须根据铁路局调度所下达的日(班)计划,正确地编制(),并在铁路局调度的指挥下组织实现。
A.车站班计划
B.阶段计划
C.调车作业计划
D.货物运输计划
参考答案:A, B, C
Jim talked for about half an hour yesterday.Never_____ him talk so much.
A.I heard
B.did I hear
C.I had heard
D.had I heard
艾滋病病毒污染物品消毒时,含氯消毒剂浓度一般为()
A.200mg/L
B.250mg/L
C.500mg/L
D.1000mg/L
E.2000~5000mg/L