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【单选题】
下述实验能达到预期实验目的的是（  ） 序号 实验内容 实验目的
A.
室温下,用pH试纸测定浓度为0.1 mol·L -1 NaClO溶液和0.1 mol·L -1 CH 3 COONa溶液的pH 比较HClO和CH 3 COOH的酸性强弱
B.
有1 mL硝酸银溶液的试管中滴加NaCl溶液,至不再有沉淀生成,再向其中滴加Na 2 S溶液 说明一种沉淀能转化为另一种溶解度更小的沉淀
C.
向NaAlO 2 溶液中滴加饱和NaHCO 3 溶液,有白色沉淀产生 验证两者都发生了水解反应,且相互促进
D.
室温下,分别向2支试管中加入相同体积、相同浓度的Na 2 S 2 O 3 溶液,再分别加入不同浓度的稀硫酸 研究浓度对反应速率的影响
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举一反三
【单选题】What's the best way to protect your hard drive data?
A.
regular backups
B.
periodically defrag it
C.
run chkdsk at least once a week
D.
run scandisk at least once a week
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【单选题】校核洪水位与防洪限制水位之间的库容,称为( )。
A.
结合库容
B.
防洪库容
C.
拦洪库容
D.
调洪库容
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【单选题】吕某故意毁坏财物案 处警方略 2018年 8 月 25 日 23 时,嫌疑人吕某酒后睡在马路边,群众拨打 120 ,郑州市第六人民医院派救护车接诊,将吕某拉回医院的途中,躺在担架床上的吕某突然醒过来乱蹬乱踹,将身上插着的仪器拔掉,无意中将身体右侧放着的一个除颤器碰坏,价值 1.95 万元。 23 时 19 分到医院后,救护车门刚打开,吕某即跳下车冲到大厅,乱扔急诊科走廊里的垃圾桶和座椅,后被控制。...
A.
吕某构成损害财物罪
B.
吕某对除颤器的损害无任何责任
C.
吕某应照价赔偿除颤器
D.
对吕某行为无法判断
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【单选题】What's the best way to prevent coronavirus disease according to the video?
A.
wash hands often
B.
stay at home
C.
wear a mask when going out
D.
do not eat wild animals
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【单选题】What's the best way to learn new words?
A.
Listen English by our ears
B.
Writing English words
C.
Travel to the UK
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【单选题】What's the best way to turn down the drinking of alcohol at the table without offending the host?
A.
Tell the host before the party you don't drink.
B.
Accept the offers, but use them to buy the host a bottle of wine.
C.
Refuse offers to drink with as much politeness as possible.
D.
Tell the host you're paying for the meal before the meal has started.
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【判断题】中轴胎座由多心皮构成的多室子房,心皮边缘于子房中央形成中轴,胚珠生于中轴上。
A.
正确
B.
错误
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【单选题】What's the best way to get from the airport to the city center?
A.
train
B.
taxi
C.
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【单选题】听力原文：What's the best way to the stadium? (A) You can get the No. 4 bus and get off at Lomb Street. (B) The show there tonight is really the best. (C) You can find a restaurant there. (39)
A.
B.
C.
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【单选题】( )与防洪限制水位之间的库容称为拦洪库容。
A.
设计洪水位
B.
校核洪水位
C.
正常蓄水位
D.
死水位
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相关题目：
【单选题】What's the best way to protect your hard drive data?
A.
regular backups
B.
periodically defrag it
C.
run chkdsk at least once a week
D.
run scandisk at least once a week
查看完整题目与答案
【单选题】校核洪水位与防洪限制水位之间的库容,称为( )。
A.
结合库容
B.
防洪库容
C.
拦洪库容
D.
调洪库容
查看完整题目与答案
【单选题】吕某故意毁坏财物案 处警方略 2018年 8 月 25 日 23 时,嫌疑人吕某酒后睡在马路边,群众拨打 120 ,郑州市第六人民医院派救护车接诊,将吕某拉回医院的途中,躺在担架床上的吕某突然醒过来乱蹬乱踹,将身上插着的仪器拔掉,无意中将身体右侧放着的一个除颤器碰坏,价值 1.95 万元。 23 时 19 分到医院后,救护车门刚打开,吕某即跳下车冲到大厅,乱扔急诊科走廊里的垃圾桶和座椅,后被控制。...
A.
吕某构成损害财物罪
B.
吕某对除颤器的损害无任何责任
C.
吕某应照价赔偿除颤器
D.
对吕某行为无法判断
查看完整题目与答案
【单选题】What's the best way to prevent coronavirus disease according to the video?
A.
wash hands often
B.
stay at home
C.
wear a mask when going out
D.
do not eat wild animals
查看完整题目与答案
【单选题】What's the best way to learn new words?
A.
Listen English by our ears
B.
Writing English words
C.
Travel to the UK
查看完整题目与答案
【单选题】What's the best way to turn down the drinking of alcohol at the table without offending the host?
A.
Tell the host before the party you don't drink.
B.
Accept the offers, but use them to buy the host a bottle of wine.
C.
Refuse offers to drink with as much politeness as possible.
D.
Tell the host you're paying for the meal before the meal has started.
查看完整题目与答案
【判断题】中轴胎座由多心皮构成的多室子房,心皮边缘于子房中央形成中轴,胚珠生于中轴上。
A.
正确
B.
错误
查看完整题目与答案
【单选题】What's the best way to get from the airport to the city center?
A.
train
B.
taxi
C.
bus
查看完整题目与答案
【单选题】听力原文：What's the best way to the stadium? (A) You can get the No. 4 bus and get off at Lomb Street. (B) The show there tonight is really the best. (C) You can find a restaurant there. (39)
A.
B.
C.
查看完整题目与答案
【单选题】( )与防洪限制水位之间的库容称为拦洪库容。
A.
设计洪水位
B.
校核洪水位
C.
正常蓄水位
D.
死水位
查看完整题目与答案