回柱绞车工在回柱时,信号工始终要和回柱工保持()m距离,随回柱位置推延而改变工作位置。
A、3~5
B、5~8
C、8~10
D、10~15
参考答案:B
根据所提供的句子意思,用所给单词的正确形式填空,使句子意思完整。并在答题卡上将答案填写在对应题号的横线上。
小题1:How many __________ ( tooth) do you have?
小题2:December is the __________ (twelve) month of a year.
小题3:It’s time ___________ (have) lunch. Let’s go to the dining hall.
小题4:What about __________ (go) hiking this Sunday?
小题5:There are __________ (hundred) of students on the playground.
小题6:Of the three rulers, __________ (my) is the shortest.
小题7:Beihai is in Guangxi in __________ (south) China.
小题8:The reporter spoke loudly so that everyone in the hall could hear him __________ (clear).
小题9:We didn’t know the way, so we asked those _________ (village) for help.
小题10:The bridge was _________ (build) five hundred years ago.
患者女性,30岁,间断胸闷不适2年,时有黑朦现象,近一周黑朦发作频繁,伴晕厥一次来诊
休息时心电图正常,为进一步明确晕厥原因,首选的检查是().
A.心脏电生理检查
B.脑电图
C.超声心动图
D.Holter
E.脑CT