【简答题】A.boring B.enjoyable C.different D.unsatisfactory
【单选题】Which of the following is the best title for the passage?
C.
Artistic vs. Commercial
【判断题】网络渗透是一把双刃剑,是攻击者常用的一种攻击手段, 也是安全工作者研究的一个课题。
【单选题】The story is about Lei Feng.It's very ______.
【单选题】The book is so ______ I returned to the library without finishing it. ( )
【单选题】若要给已定义的变量inta,b,c,d;都赋值1,以下错误的是
【简答题】A.boring B.practical C.exciting D.natural
【简答题】焊接工字形压弯构件,长10m,两端铰接,跨中弱轴(y)向有一侧向支承点,Q235钢。N=900kN(静载),跨中横向集中力Py=100kN,验算构件整体稳定和局部稳定。(截面高500mm,A=16700mm^2,Ix=7.92x10^8mm^4,Iy=1.6x10^8mm^4) λx=( ),λy=( ),Nex′=( )kN