Is a decentralized, distributed and public digital ledger that is used to record transactions across many computers so that the record cannot be alterred retroactively without the alteration of all subsequent blocks and the collusion ?of the network().

A．Cloud service

B．Blockchain

C．Internet of things

D．Artificial intellingence

[单选题]The deck loads on a ship are distributed through the deck beams to the（）.A . framesB . hullC . stringersD . plate

[单选题]［A］ distributed ［B］ awarded ［C］ handed ［D］ submitted

[名词解释] 旅客分配站台 distributed platform of passenger

[名词解释] 集配站 accumulated and distributed car station

[主观题]John Donahue’s attitude towards the public-sector system is one of[A]disapproval.[B]appreciation.[C]tolerance.[D]indifference.

[单选题]The percentage changes in annual earnings for a company are approximately n

[单选题]阅读下列代码段 class TestimplementsRunnable{ publicintrun(){ inti=0； while(true){ i++； System.out.println("i="+1)； } } } 上述代码的编译结果是( )。A．程序通过编译并且run()方法可以正常输出递增的i值B．程序通过编译，调用run()方法将不显示任何输出C．程序不能通过编译，因为while的循环控制条件不能为“true”D．程序不能通过编译，因为run()方法的返向值类型不是void

[问答题] 什么是DistributedD.O.S（Distributed Denial Of Service）分布式拒绝服务

[单选题]The appropriate test statistic for a test of the equality of variances for

[单选题]The appropriate test statistic to test the hypothesis that the variance of