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【单选题】
用含少量NaHCO 3 的Na 2 CO 3 标定时,使c HCl 值( )A.
偏高
B.
偏低
C.
无影响
D.
无法判断
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举一反三
【单选题】女性容易被精致亮眼的珠宝所吸引,而幼儿则容易被新奇的玩具和糖果吸引,这说明( )对注意的影响。
A.
人的情绪和精神状态
B.
人对事物的需要和兴趣
C.
人的知识经验
D.
人的惯性
【单选题】有学者说,因辛亥革命,中国人的脑袋与双膝不再为磕头而准备着,而是为思考问题、为走路而准备着。该学者强调辛亥革命 ( )
A.
激发了人们强烈的民族意识
B.
结束了中国君主专制政体
C.
促进了民主平等意识的觉醒
D.
推动了中国社会移风易俗
【单选题】有学者说,因辛亥革命,中国人的脑袋与双膝不再为磕头而准备着,而是为思考问题、为走路而准备着。这里强调的是辛亥革命
A.
提供了可以大胆尝试的民权政治舞台
B.
结束了中国两千多年的君主专制政体
C.
促进了民主精神以及平等意识的觉醒
D.
奠定了中国实行民主宪政的制度框架
【单选题】No one realized the cause of the deterioration of the world agricultural commodity market because ______.
A.
there was a long interval between cause and effect
B.
the weather was difficult for us to forecast
C.
weather forecasts were inaccurate
D.
ecologists didn't exist until modem times
【简答题】The author cites the example of Emily Hoffman to show that ______ is / are one cause of overweight.
【单选题】No one realized the cause of the deterioration of the world agricultural commodity market because ______
A.
there was a long interval between cause and effect
B.
the weather was difficult for us to forecast
C.
weather forecasts were inaccurate
D.
ecologists didn't exist until modern times
【单选题】The committee's ______ of the cause of the accident determined that no one was at fault.
A.
variety
B.
suspicion
C.
analysis
D.
formula
【单选题】悬停状态的六轴飞行器()实现向前移动
A.
纵轴右侧的螺旋桨减速,纵轴左侧的螺旋桨加速
B.
横轴前侧的螺旋奖减速,横轴后侧的螺旋奖加速
C.
横轴前侧的螺旋桨加速,横轴后侧的螺旋桨减速
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