{{B}}Easy Learning{{/B}} Students should be jealous. Not only do babies get to doze their days away, but they’ve also mastered the fine art of learning in their sleep. By the time babies are a year old, they can recognize a lot of sounds and even simple words. Marie Cheour at the University of Turku in Finland suspected that they might progress this fast because they learn language while they sleep as well as when they are awake: To test the theory, Cheour and their colleagues studied 45 newborn babies in the first days of their lives. They exposed all the infants to an hour of Finnish vowel sounds one that sounds like "oo", another like "ee" and a third boundary vowel peculiar to Finnish and simi [单选题]5.受电弓动态包络线的检测目的是:检查受电弓在最大抬升及摆动时,有无()侵入动态包络线内。
A.异物 B.线夹 C.线索 D.接触网设备 [单选题]电控发动机转速传感器安装在( )。
A.水泵内 B.曲轴前、曲轴后或分电器内 C.节气门总成上 D.凸轮轴后 [名词解释]微晶糖
[多项选择]新生儿皮肤的特点()
A. 皮肤有乳白色的胎脂 B. 角质层较薄 C. 皮下毛细血管丰富 D. 皮肤呈浅玫瑰色 E. 容易得湿疹 [判断题]对于长距离线路,高频信号主要是以相间波的形式传输到对端。( )混合波
A.正确 B.错误 [多项选择]在《土工试验方法标准》(GB/T50123-1999)中,适用于细粒土的直接剪切试验方法有()。
A. 慢剪 B. 快剪 C. 固结慢剪 D. 固结快剪 [多选题]施工期间应做好电缆和电缆附件的()措施。在现场安装高压电缆附件之前,其组装部件应试装配。
A.防火 B.防外力损伤 C.防尘 D.防潮 [单项选择]患者因右上后牙邻面龋银汞充填后出现咀嚼痛,自行服用抗生素后无好转,查体:叩(+),垂直叩诊较明显,充填体表面有亮点,冷(一),松(一),未查见悬突,对牙未见修复体该疾病的鉴别诊断为()
A. 牙龈乳头炎 B. 急性上颌窦类 C. 急性根尖炎 D. 急性牙髓炎 E. 以上皆是 [判断题]( )电气化铁道无线电辐射干扰在基准距离测量时,测量场地的电磁环境噪声场强至少比来自被测对象的无线电辐射干扰场强的最大值低6dB。
A.正确 B.错误 [单选题]戴帽子.口罩不正确的方法是
A.帽子应遮住全部头发 B.口罩应罩住口鼻部 C.不可用污染的手触摸口罩 D.一次性口罩不潮湿不用更换 E.纱布口罩使用2~4h应更换 [多选题]《关于视力残疾旅客携带导盲犬进站乘车若干规定(试行)》(上铁客函〔2015〕588号)规定:视力残疾旅客携带导盲犬,在车站及乘车期间,()或()负责照看导盲犬及照顾导盲犬吃、喝、排泄,请勿影响站车环境卫生。
A.车站客运员 B.列车乘务员 C.旅客 D.同行成年人 [单项选择]备洞时未去尽龋坏组织,致使充填后龋损继续发展,可引起()。
A. 药物性根尖周炎 B. 牙周炎咬合痛 C. 残髓炎 D. 药物性牙周组织坏死 E. 继发龋 [单项选择]
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