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【单选题】
在光度测定中,使用参比溶液的作用是(    )。
A.
调节仪器透光度的零点
B.
吸收入中测定所需要的光波
C.
调节入射光的光强度
D.
消除溶液和试剂等非测定物质对入射光吸收的影响
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【简答题】How long will the brothers stay in Africa?
【简答题】昨天下午2时到4时你在做什么
【单选题】促进胃排空的主要因素是
A.
大量食物入胃的机械和化学刺激
B.
十二指肠内的酸性刺激
C.
十二指肠内的脂肪增加
D.
十二指肠内的渗透压增高
【多选题】资本主义的内在矛盾决定了资本主义必然被社会主义所代替,这是因为( )
A.
资本主义基本矛盾“包含着现代的一切冲突的萌芽”
B.
资本积累推动资本主义基本矛盾不断激化并最终否定资本主义自身
C.
国家垄断资本主义是资本社会化的更高形式,将成为社会主义的前奏
D.
资本主义社会存在着资产阶级和无产阶级两大阶级之间的矛盾和斗争
【判断题】框选方法中,从左往右出现蓝色框、从右往左出现绿色框。
A.
正确
B.
错误
【单选题】以下哪项不是第二次卫生革命预防的主要任务
A.
心血管疾病
B.
脑血管疾病
C.
营养不良性疾病
D.
恶性肿瘤
E.
意外伤亡
【单选题】以下哪项不是第二次卫生革命预防的主要任务
A.
心血管疾病
B.
营养不良性疾病
C.
恶性肿瘤
D.
意外伤亡
【单选题】If Mickelson had not used the example of the Wright brothers in her argument, what other example might have illustrated her point as well?
A.
Despite widespread public opinion that the sun revolves around the earth, Galileo Galilei published findings showing that the earth revolved around the sun he later retracted this assertion as a result of pressure from the Church.
B.
A tobacco company chose to market cigarettes to children despite widespread public opinion that such marketing is unethical over the following decade, the company expanded its share of the tobacco market.
C.
A home electronics company devoted substantial development resources to eight-track audio technology despite widespread industry opinion that cassette tapes were the wave of the future eight-tracks were soon replaced by cassette tapes, which in turn were
D.
A newspaper chose to publish a story that government lawyers said it could not print the newspaper won its case against the government lawyers in a federal court, and the writer of the story won a Pulitzer Prize.
E.
A computer company initiated research into manufacturing a computer for home use when widespread public opinion held that computers could be useful only for large corporations or government agencies personal home computers became a multibillion-dollar ma
【多选题】按磁浮方式划分,磁浮列车分为()、()和()。
A.
电磁吸引式磁浮
B.
感应力吸磁浮
C.
永磁力磁浮
D.
感应力斥磁浮
【简答题】According to the first paragraph, what is the reason for Disney brothers in 1923 established The Disney Brothers Studio?
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