【判断题】Is it appropriate to train your replacement and help them get started?
【单选题】小明在探究杠杆平衡条件时,实验中杠杆始终处于水平平衡状态,如图,若在右端从1位置→2位置逐渐改变弹簧测力计拉力的方向,则拉力的变化情况是( )
【简答题】如图,李老师设计了一个探究杠杆平衡条件的实验:在一个自制类似天平的仪器的左边固定托盘A中放置一个重物,在右边的活动托盘B(可左右移动)中放置一定质量的砝码,使得仪器左右平衡,改变活动托盘B与点O的距离x(cm),观察活动托盘B中砝码的质量y(g)的变化情况.实验数据记录如下表: x(cm) 10 15 20 25 30 y(g) 30 20 15 12 10 (1)把上表中(x,y)的各组对应值作...
【单选题】Suppose the U.S. dollar substantially depreciates against the Japanese yen. The change in exchange rate?
A.
can have significant economic consequences for U.S. firms.
B.
can have significant economic consequences for Japanese firms.
C.
can have significant economic consequences for both U.S. and Japanese firms.
【单选题】At a business dinner, when is it appropriate to have a drink?
B.
Only if the host and senior guests are drinking.
C.
Only if others of your level and above are drinking.
D.
Always, this is an adult meal at a restaurant, after all.
【简答题】在探究“杠杆的平衡条件”实验中: (1)首先,调节杠杆两端的 ,使杠杆两端在不挂钩码时,保持水平并静止,这样便于 。 (2)如图所示,杠杆每格长度相同,杠杆的口处已挂着2个0.5N的钩码,要使杠杆平衡,则应在杠杆的 处,挂上 个0.5N的钩码。
【简答题】在“探究杠杆平衡的条件”实验中,如图( a )所示,为使杠杆在水平位置平衡,可调节杠杆右端的平衡螺母向______移动;调节杠杆平衡后,在图( b )的 A 位置挂1个钩码,则应在 B 位置挂______个相同的钩码,才能使杠杆在水平位置平衡。
【简答题】按照机器人的技术发展水平可以将工业机器人分为三代, 分别是 、 和 。
【简答题】项目可行性市场调研。请各组上传期中考核的PPT或VCR
【判断题】Is it appropriate to take home your personal belonging in the office ?