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【单选题】
影响混凝土拌和物和易性的主要因素中，（）决定水泥浆的数量和稠度，是影响混凝土和易性的最主要因素。
A.
砂率
B.
单位体积用水量
C.
组成材料的性质
D.
时间和温度
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【单选题】On which of the following assumptions is based the belief that tree-ring thickness shows links between solar periodicity and terrestrial climate?
A.
Solar-activity cycle existed in its present form. during the period in question.
B.
Average tree-ring thickness varies from species to species.
C.
Tree-ring thickness varies with changes in terrestrial climate.
D.
Both terrestrial climate 'and solar-activity cycle affect tree-ring thickness.
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【单选题】It is hard to imagine smells _____ when a film is shown in the future. [     ]
A.
are given away
B.
are put away
C.
are sent out
D.
are given out
查看完整题目与答案
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【单选题】二．单项选择： 1.It is hard to imagine smells _____ when a film is shown in the future.
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are given away
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C.
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【单选题】On which of the following assumptions is based the belief, that tree-ring thicknesses show links between solar periodicity and terrestrial climate?
A.
Solar-activity cycle existed m its present form. during the period in question.
B.
Average tree-ring thickness varies from species to species.
C.
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Both terrestrial climate and solar-activity cycle randomly affect tree-ring thickness.
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【单选题】机车过充压力消除是电空制动控制器手柄由“过充位”回“( )”后,制动管过充压力是经中继阀排出。过充消除的时间需要120s。
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B.
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C.
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【单选题】We have made it a rule that whoever finds that tree first can take_________ of it.
A.
possession
B.
seize
C.
hold
D.
seat
查看完整题目与答案
【简答题】r eshuffled , sheperds , grid , crow , weld , lubricate , shutter , cabinet , copper , dispersed , tract , deduce , invalid , disrupted , quantify , 1. The PM _____ the cabinet and adopted a more radi...
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【单选题】On which of the following assumptions is based the belief that tree-ring thickness shows links between solar periodicity and terrestrial climate?
A.
Solar-activity cycle existed in its present form. during the period in question.
B.
Average tree-ring thickness varies from species to species.
C.
Tree-ring thickness varies with changes in terrestrial climate.
D.
Both terrestrial climate 'and solar-activity cycle affect tree-ring thickness.
查看完整题目与答案
【单选题】The cherries on this tree are bigger than ______ on that tree. [     ]
A.
them
B.
ones
C.
those
D.
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【单选题】It is hard to imagine smells _____ when a film is shown in the future. [     ]
A.
are given away
B.
are put away
C.
are sent out
D.
are given out
查看完整题目与答案