【简答题】请回答以下关于Internet Explore中Outlook Express使用与操作的问题1~4。 打开Outlook Express后,在出现的主窗口中靠左边有一子窗口是“文件夹列表”,请列出其中包括的5个文件夹(用户自建的文件夹不计人)。
【判断题】采用霍尔元件换向的电动机,应注意开关的出线顺序不能搞错。
【单选题】突厥人与回纥人的关系是( ) 与( )的关系。
【判断题】For a monopsonist, the supply curve of a factor of production is less steep than the marginal cost curve.
【判断题】firm in a competitive factor market is a price taker. A monopsonist is a price maker.
【单选题】For a monopsonist, the labor supply curve is upward sloping because
A.
the monopsonist must compete with other industries for that labor.
B.
the monopsonist requires that the laborers are highly skilled.
C.
the monopsonist is the only buyer in that labor market.
D.
the monopsonist restricts the supply of labor.
【单选题】A monopsonist faces an upward-sloping labor supply curve. This means that his marginal expenditures on labor are
A.
greater than the wage.
B.
equal to the wage plus the increase in the wage resulting from hiring one more unit of labor hired.
C.
greater than the wage because hiring more workers requires to pay all workers more.
【单选题】If a monopsonist pays the wage rate w; then the amount of labor that he can hire is L(w) = Aw, where A is a positive constant. The marginal cost of labor to the monopsonist is:
A.
equal to the wage rate.
D.
greater than the wage rate but less than twice as great.
【单选题】以下对唐朝与周边民族和国家的关系表述不正确的是()
B.
回纥与唐朝保持着友好和从属的关系,曾帮助唐王朝平定安史之乱
D.
吐蕃是古代藏族所建立的地方政权,唐朝与吐蕃长期处于和战不定的局面
【简答题】请回答以下关于Internet Explore中Outlook Express使用与操作的问题1~4,把解答填入对应栏内。 打开Outlook Express 后,在出现的主窗口中靠左边有一子窗口是“文件夹列表”,请列出其中包括的5个文件夹(用户自建的文件夹不计入)。