皮皮学，免费搜题
登录
搜题
【单选题】
（ ）电动机的转子极数能自动地跟随定子极数的变化A.
绕线式异步
B.
鼠笼式异步
C.
直流
D.
步进
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】关于网络外部性的描述应当被解释为:
A.
对某一商品的需求是随着价格的降低而增加的
B.
一个商品的价值随其预期将售数量的增加而增加
C.
边际效用递减
D.
价低买者众、价高买者寡
【简答题】汽油是由( )原子和( )原子组成的烃类化合物，其不溶于水是因为烃类化合物为( )性分子。
【简答题】火灾引发爱立信退出手机生产市场 2001 年爱立信公司终于宣布退出手机生产。根据《华尔街日报》的分析,爱立信公司之所以选择退出,原因有飞利浦芯片厂火灾引起的损失、市场营销不力和产品设计等方面的问题,其中在飞利浦芯片厂火灾之后,没有注重对相关信息的采集和迅速响应,是爱立信和诺基亚拉开距离的主要原因。 2000年3月17日晚上8时,美国新墨西哥州大雨滂沱,电闪雷鸣。雷电引起电压陡然增高,迸出的火花点燃...
【单选题】A: We took the first on the left.
A.
B: You SHOULD have taken the first on the right.
B.
B: You should have TAken the first on the right.
C.
B: You should have taken the FIRST on the right.
D.
B: You should have taken the first on the RIGHT.
【单选题】We learn from the passage that
A.
all living things on the earth depend on the sun for their food
B.
a forest looks dark in winter because it absorbs solar energy
C.
only 0.023 of the energy from the sun is made use of on the earth
D.
greenhouse gases allow heat energy to escape from the earth's surface
【单选题】Last week, we surveyed the students in our school on their learning goals. The picture on the right shows the results. ____ out of 60 students don't have any learning goal. [ ]
A.
9
B.
15
C.
21
D.
30
【简答题】柴油和汽油一样,是从石油中提炼出来的,由 、 元素组成的烃类化合物。
【简答题】汽油是由（）原子和（）原子组成的烃类化合物，其不溶于水的原因是因为烃类化合物为（）性分子。
【单选题】WANTED Do you like to talk with people? Do you like to edit some articles? If you want to work for our newspaper as a part-time editor, please call Karen at 5583666. 20. If you are a college student o...
A.
waiter
B.
baby-sister
C.
cleaner
D.
editor
【简答题】A．We Are Alone on the Internet B．We Are Alone and Together on the Internet C．We Are Communicating on the Internet D．We Are in the Imaginary World of the Internet
相关题目：
参考解析：
知识点：
题目纠错 0
发布
