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You are attempting to parallel two AC generators and the synchroscope pointer is revolving in the slow direction. This indicates that the frequency of the incoming machine isA.higher than the bus frequencyB.lower than the bus frequencyC.file same as file

题目

You are attempting to parallel two AC generators and the synchroscope pointer is revolving in the slow direction. This indicates that the frequency of the incoming machine is

A.higher than the bus frequency

B.lower than the bus frequency

C.file same as file bus frequency but out of phase with it

D.the same as the bus frequency, and the circuit breaker may be closed at nay pointer position


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  • 第1题:

    Development is a structured design methodology that proceeds in a sequence from one phase to the next.

    A.Waterfall
    B.Phased
    C.Prototyping
    D.Parallel

    答案:A
    解析:
    本题是考察开发模型概念。
    瀑布模型(Waterfall)开发过程是通过设计一系列阶段顺序展开的,从系统需求分析开始直到产品发布和维护,每个阶段都会产生循环反馈。

  • 第2题:

    执行完下面的语句后,欲删除整个数组,最适当的方法是() float *pointer=new float[10];

    A.delete * pointer;

    B.delete[ ] pointer;

    C.delete pointer [ ];

    D.delete & pointer;


    ALTER 表名 DROP COLUMN 列名

  • 第3题:

    4、执行完下面的语句后,欲删除整个数组,最适当的方法是() float *pointer=new float[10];

    A.delete * pointer;

    B.delete[ ] pointer;

    C.delete pointer [ ];

    D.delete & pointer;


    delete[ ] pointer;

  • 第4题:

    下面一段代码中break语句起到()的作用。 int pointer = 1; while (pointer <= 100) { switch(pointer % 3) { case 1: pointer += 1; break; case 2: pointer += 2; break; case 3: pointer += 3; break; } pointer++; }

    A.结束当次循环,使控制权直接转移到控制循环的条件表达式

    B.从嵌套循环内部跳出最里面的循环

    C.终止switch语句的语句序列

    D.退出循环


    终止 switch 语句的语句序列,提高 switch-case 语句性能

  • 第5题:

    5、下面一段代码中break语句起到()的作用。 int pointer = 1; while (pointer <= 100) { switch(pointer % 3) { case 1: pointer += 1; break; case 2: pointer += 2; break; case 3: pointer += 3; break; } pointer++; }

    A.结束当次循环,使控制权直接转移到控制循环的条件表达式

    B.从嵌套循环内部跳出最里面的循环

    C.终止switch语句的语句序列

    D.退出循环


    C

  • 第6题:

    MySQL 5.7中基于组提交的并行复制如何设置

    A.slave-parallel-type 设置为DATABASE

    B.slave-parallel-type 设置为LOGICAL_CLOCK

    C.master-parallel-type 设置为DATABASE

    D.master-parallel-type 设置为LOGICAL_CLOCK