【单选题】已知f(x)=(m-1)x 2 +2mx+3为偶函数,则f(x)在(2,5)上是 [ ]
【单选题】.The passengers___at Southampton.
【简答题】如果一个字符串 str 中不含有 @ ,则运行 str.indexOf(“@”) 后的结果是 ______。
【单选题】已知偶函数f(x)的定义域为R,且在(-∞,0)上是增函数, M=f( 3 4 ) ,N=f(a 2 -a+1)(a∈R),则M与N的大小关系( )
【简答题】在编写程序过程中,如果希望一个字符串的内容全部是英文字母,若其中包含其他的字符,则抛出一个异常。因为在 Java 内置的异常类中不存在描述该情况的异常,则需要自定义该异常类。(直接复制代码在答案区) 例如: str1="HellWorld"; str2="Hell!MR!"; 结果: HellWorld 字符串 "Hell!MR!" 中含有非法字符 ! 参考exam04,
【简答题】The crowd at the airport moved forward like waves. The passengers had been waiting for a couple of hours for an airline employee to open the door leading to the plane outside. No one was in a good moo...
【单选题】对方报价后第一次运用的讨价方式是( )。
【简答题】A.The traffic jam. B.Constant stopping at bus-stops. C.The rudeness of the passengers on the bus. D.The rude behavior. of the bus driven
【单选题】When the people saw the land, _______________.
A.
only passengers were glad
B.
the sailors had to swim ashore
C.
they were surprised at the news that some ships never arrived
D.
ail of them were excited
【单选题】已知函数f(x)=sin(ωx+φ)(ω>0,0≤φ≤π)是R上的偶函数,其图象关于点 M( 3π 4 ,0) 对称,且在区间 [0, π 2 ] 上是单调函数,则ω的值为( )