【简答题】什么叫活化能?为什么酶具有高的催化效率?
【单选题】股份公司通过发行股票筹措的资金是公司用于营运的( )。
【单选题】河水在重力作用下,从取水头部流入集水间,经格网流入水泵吸水间的是( )方式。
【多选题】关于依法执政,说法正确的有()
A.
在依法治国、依法执政、依法行政三者中,处于关键的支配性地位
【简答题】我们知道,在数轴上,x=1表示一个点,而在平面直角坐标系中,x=1表示一条直线;我们还知道,以2x-y+1=0的所有解为坐标的点组成的图形就是一次函数y=2x+1的图象,它也是一条直线,如图1. 观察图1可以得出:直线x=1与直线y=2x+1的交点P的坐标(1,3)就是 方程组 x=1 2x-y+1=0 的解,所以这个方程组的解为 x=1 y=3 . 在直角坐标系中,x≤1表示一个平面...
【单选题】两只鸡蛋摩擦时能发出如石子相碰的清脆的“咔咔声”的是
【多选题】千利休创立了日本正宗茶道,他提出了怎样的茶道精神
【单选题】Glenn Holland was a talented musician and composer who was also a professional musical performer. Why did he accept a teaching position at John F. Kennedy High School?
A.
Because he was tired of composing music.
B.
Because he wanted to enjoy more free time with his young wife, Iris, and compose a piece of orchestral music .
C.
Because his son Cole was born deaf, Glenn Holland wanted to teach his son by himself.
D.
Because his wife Iris thought he would be a good teacher instead of a good composer.
【单选题】磁性物质能被外磁场强烈磁化,但磁化作用不会无限地增强,即磁性物质在磁化过程中,当磁场强度H达到一定值后,其磁感应强度B不再随H增加而增加,这是由于磁性物质存在( )。
【判断题】安格尔用自己毕生精力完成的杰作是《泉》。