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【单选题】

下列有关定量判断正确的是

A.
18gH218O分子中含有的10NA个质子
B.
将3mol NO2完全溶于水,生成NO气体,气体的物质的量变为2mol
C.
将1.5molCO2气体通入到1L 1mol/L的NaOH溶液中,生成1mol碳酸钠
D.
2Cu2S+2H2SO4+5O2=4CuSO4+2H2O反应中,当1mol O2发生反应时,还原剂所失电子的物质的量为4mol
题目标签:定量判断关定
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【多选题】下列哪些可以作为判断疾病的依据()

A.
生活环境
B.
季节气候
C.
起居饮食
D.
运动习惯

【多选题】有关定性研究的描述正确的是?

A.
描述的方法是用文字
B.
研究对象是不同事物、现象的意义及特征
C.
研究的本质是归纳——从特殊事例中归纳出一般的原理
D.
研究的本质是演绎——从一般原理推广到特殊事例

【单选题】Part ADirections: Read the following four texts.Answer the questions below each text by choosing A, B, C or D.(40 points)The long year of food shortage in this country have suddenly given way to appar...

A.
The abundant food supply is not expected to last
B.
Britain is importing less food
C.
Despite the abundance, food prices keep rising
D.
Britain will cut back on its production of food

【单选题】The long year of food shortage in this country have suddenly given way to apparent abundance. Stores and shops are choked with food. Rationing (定量供应 ) is virtually suspended, and overseas suppliers ha...

A.
the fall in world food prices would benefit British food producers
B.
an expansion of food production was at hand
C.
British food producers would receive more government financial support
D.
it looks depressing despite government guarantees

【单选题】定量检测AFP不能采用

A.
ELISA
B.
RIA
C.
对流免疫电泳
D.
荧光偏振免疫
E.
电化学发光