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【简答题】
What if you were told there was a way you may strengthen our cognitive ( 认知的 ) skills, and heighten your intelligence, and all you had to do was learn another language? It probably sounds great, because if you’re like most people you would love to be able to speak a second language. But, what if you were told it would take only 10 days to be on your way to becoming bilingual? Most people recognize the many benefits of learning a foreign language: You can travel to foreign countries and feel comfortable, be a more productive and attractive employee in today’s competitive job market, and enjoy yourself in the vast cultures that surround you. But now, the collective evidence from a number of recent studies suggests that the bilingual experience improves the brain’s so-called executive function –a command system that directs the attention processes that we use for planning, solving problems, and performing various other mentally demanding tasks. Even better, new approaches to learning mean you can learn a new language without endless repetition, homework, and memorization. One of the most powerful, The Pimsleur Approach, actually trains people to start speaking a new language in as little as 10 days! In fact, it's so powerful, even the FBI has purchased it! The Pimsleur Approach aims each lesson at teaching you to use the core vocabulary of the language, so you can speak the most in the least amount of time. It's not how many words you know, but rather, which words you can use. Each Pimsleur Approach lesson has been scientifically sequenced to rapidly lock language material into your brain after just one listen. Let the audio guide you; the program is based on what language learning should be: Quick, fun, and easy. You'll absorb your new language without any reading, writing, or computer use.
拍照语音搜题,微信中搜索"皮皮学"使用
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【简答题】斜齿轮主动轮轴向力的方向可用 定则判定。
【判断题】( )基孔制间隙配合中最小间隙的大小只与轴的基本偏差有关,而最大间隙的大小还与孔、轴的公差等级有关。 对 错
A.
正确
B.
错误
【单选题】如图所示,作用于坐标原点 O 的三个力平衡,已知三个力均位于 xOy 平面内,其中力 F 1 的大小不变,方向沿 y 轴负方向;力 F 2 的大小未知,方向与 x 轴正方向的夹角为 θ .则下列关于力 F 3 的判断正确的是:
A.
力F3只能在第二象限.
B.
力F3与F2夹角越小,则F2与F3的合力越小
C.
力F3的最小值为F1cosθ.
D.
力F3可能在第三象限的任意区域.
【单选题】下图所示传动装置用来提升重物,电动机1驱动。轴II上蜗杆4的轴向力与斜齿轮3的轴向力部分抵消,蜗轮5为左旋,顺时针方向,请判断: 轴 I 和轴II的转向为 。
A.
轴 I 转向向上,轴 II 转向向下
B.
轴 I 转向向上,轴 II 转向向上
C.
轴 I 转向向下,轴 II 转向向上
D.
轴 I 转向向下,轴 II 转向向下
【单选题】品牌中可以被识别的但又不能用语言称呼的部分,称为
A.
品牌标志
B.
品牌名称
C.
品牌颜色
D.
商标
【多选题】课堂教学中涉及到有时间跨度的实验,在教学设计时可以选择的处理方法是:
A.
要求学生注意观察,并等待实验结果
B.
准确地掌握实验从开始到正确观察到实验现象的时间
C.
一套装置给学生介绍实验过程,并事先准备另一套实验装置,提前开始实验,或事先停留在最终实验结果的状态以便学生观察。
D.
不在课堂上演示有时间跨度的实验
【单选题】原子荧光光度计灯电流与荧光强度的关系()。
A.
灯电流越大,荧光强度越大,噪声越大
B.
灯电流越小,荧光强度越小,噪声越大
C.
灯电流越小,荧光强度越大,噪声越大
D.
随着灯电流的增大,荧光强度逐渐趋于平衡,噪声越大
【多选题】实施宪法,需要坐到( )
A.
经常修改宪法
B.
崇尚与尊重宪法
C.
以宪法为行为的根本准则,自觉维护宪法
D.
根据宪法规定的原则和精神制定各方面的法律、法规,坐到有法可依
【判断题】基孔制间隙配合中最小间隙的大小只与轴的基本偏差有关,而最大间隙的大小还与孔、轴的公差等级有关。
A.
正确
B.
错误
【简答题】下列程序的功能是通过带参的宏定义,求圆的面积。填空,使得程序完整。 # define PI 3.1415926 # define AREA( r ) ___________ int main ( ) { double r; printf ( "\nr = " ); scanf ( "%_ _", &r ); printf ( "\nArea = %lf ", AREA( r ) ); ret...
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