更多“普通十字轴式万向节允许相交的两轴间的交角是（）”相关的问题
对于IE寄存器来说，开放总中断，其对应的C51命令为（），允许串口中断，其对应的C51命令为（）。
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若气体分子的平均速率为v，则一个A分子在单位时间内碰撞其它A分子的次数 试证每一个分子在两次碰撞之间所走过的平均距离为
若气体分子的平均速率为v，则一个A分子在单位时间内碰撞其它A分子的次数
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在作业中一旦发现有人出现中毒窒息,应迅速将中毒者抬离中毒环境,转移到中毒环境上风处,新鲜风流畅通处,取平卧体位。救护人员在施救时应当采取防护措施,保证自身安全。
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当在软件中只将LED模块与主控板连线时，对编程界面模块栏中出现的语句说法正确的是（）
A.有引脚相关语句和LED模块相关语句
B.只有LED模块相关语句
C.有延时语句
D.与LED模块相关的只有点亮/关闭LED模块一条语句
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【2011年真题】房地产投资项目结束时，流动资金通常以（）形式被收回。
A．货币资金B．租金收益C．折旧费用D．运营费用
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第610题：桥梁基坑开挖中，加固坑壁措施有（）。
A：挡板支撑
B：钢木结合支撑
C：锚杆支护
D：混凝土护壁
E：砌石护坡
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疫疠邪气的特性是
A.重浊
B.干涩
C.易流行
D.升散
E.收引
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浅井供电系统适用于煤层埋藏距地表不超过（)，且电力负荷较小的中小型矿井
A、120mB、130mC、150mD、140m
B、130mC、150mD、140m
C、150mD、140m
D、140m
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最能代表中国古典园林艺术成就的园林类型是（）。
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SQ34X切丝机采用（）作为进刀机构的动力源。
A.涡轮蜗杆
B.摆动气缸
C.步进电动机
D.同步伺服电动机
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根据下面资料，回答29-32题Blended learning （混合式学习）can describe any combination of teaching techniques or resources with the goal of making learning more interesting，better suited to the learner and more effective.Recently blended language learning has come to mean the combination of normal classroom activities with self-study learning supported by technology.There are many possible elements，or modes，of learning to blend.Here are a few examples，going from blends that rely heavily on technology to those that require nothing extra on the part of the teacher or school.In most situations，however，the main ingredient of course is still teacher-led lessons in the classroom；the online part is often delivered by a website that combines different components in one site.This is called a virtual environment，or VLE.An important function of many VLE is that they can be used as a type of online workbook.Unlike printed workbooks，the exercises can be more varied and interactive.Also students are given instant feedback on their work.Increasingly，there are also online materials for teachers to use in the classroom，like animated grammar presentations.That opens up a range of possble paths for teachers to choose whether to follow a lesson plan in the traditional way or go completely digital or find a balance between the two to suit their students.Although learning outcomes can be improved by combining the best elements of classroom-based learning with the best that technology has to offer，we need to be careful in how we blend.Our role as teachers is changing；as the opportunities for independent study increase "dramatically，it is important that we guide our students in the new choices they have available.Blended language learning is the perfect way to bridge the gap between the classroom and the online world，and it offers meaningful motivating and effective new paths to students´learning goals.
根据下面资料，回答29-32题Blended learning （混合式学习）can describe any combination of teaching techniques or resources with the goal of making learning more interesting，better suited to the learner and more effective.Recently blended language learning has come to mean the combination of normal classroom activities with self-study learning supported by technology.There are many possible elements，or modes，of learning to blend.Here are a few examples，going from blends that rely heavily on technology to those that require nothing extra on the part of the teacher or school.In most situations，however，the main ingredient of course is still teacher-led lessons in the classroom；the online part is often delivered by a website that combines different components in one site.This is called a virtual environment，or VLE.An important function of many VLE is that they can be used as a type of online workbook.Unlike printed workbooks，the exercises can be more varied and interactive.Also students are given instant feedback on their work.Increasingly，there are also online materials for teachers to use in the classroom，like animated grammar presentations.That opens up a range of possble paths for teachers to choose whether to follow a lesson plan in the traditional way or go completely digital or find a balance between the two to suit their students.Although learning outcomes can be improved by combining the best elements of classroom-based learning with the best that technology has to offer，we need to be careful in how we blend.Our role as teachers is changing；as the opportunities for independent study increase "dramatically，it is important that we guide our students in the new choices they have available.Blended language learning is the perfect way to bridge the gap between the classroom and the online world，and it offers meaningful motivating and effective new paths to students´learning goals.
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在电网中装设带有方向元件的过电流保护是为了保证动作的（），在（）处发生（）短路时方向电流保护会出现死区。
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在携带灭火器奔跑时，（）不能横置，要保持竖直以免提前混合发生化学反应。
A.酸碱灭火器
B.清水灭火器
C.化学泡沫灭火器
D.二氧化碳灭火器
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