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【单选题】
水泥安定性试验时,调整好沸煮箱内的水位,沸煮试件应保证在30min±5min内加热水至沸腾,并恒沸( )。A.
3h±5min
B.
3h±15min
C.
5h±5min
D.
5h±15min
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【简答题】化学源于生活,生活中蕴含着许多化学知识。 (1)用洗涤剂去除油污,是利用洗涤剂的__________作用。 (2)邵阳地区的生活用水多是硬水,生活中常用________的方法降低水的硬度。 (3)打开汽水瓶盖时,汽水会自动喷出来,说明气体在水中的溶解度随______而减小。 (4)医生给胃酸过多的病人所开处方中,常包括含 Al(OH)3 的药物,试用化学方程式表示其治疗原理:___________...
【单选题】正确的用眼卫生指导是
A.
看完电视后做些轻松的全身活动
B.
电视机屏幕的高度是眼平视高度1倍左右
C.
连续看书2小时左右要休息片刻
D.
屏幕高度应略高于眼睛
E.
眼睛离开书的距离为15cm左右
【单选题】Tiffany’s misjudgment about the candidate stemmed from
A.
racial stereotypes
B.
invalid personal bias
C.
cultural ignorance
D.
emphasis on physical appearance
【单选题】● Your team has prepared a CPM schedule for your review. You notice that one node has six inputs (including two dummy activities) and four outputs (which include one dummy activity). Select the correc...
A.
This is a valid representation if the logic is correct.
B.
This is invalid because a node can have a maximum of one dummy input representation if the logic is correct.
C.
This is invalid because nodes cannot have both dummy inputs and dummy outputs.
D.
This is a invalid because the number of outputs must equal the number of inputs.
E.
This is invalid because a maximum of two inputs and two outputs are allowed using the critical path method.
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