The operation of _______two alternators requires the voltages to be equal and also in phaseA.parallelingB.series-mountingC.runningD.controlling

题目

The operation of _______two alternators requires the voltages to be equal and also in phase

A.paralleling

B.series-mounting

C.running

D.controlling

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参考答案和解析
正确答案：A
更多“The operation of _______two alternators requires the voltages to be equal and also in phas ”相关问题

  • 第1题：

    假设有String a = "A"; char b ='A'; int c=65,下面选项中正确的是( )。

    A．if(a == b) {System. out. print("Equal") }

    B．if(c == b) {System. out. print("Equal") }

    C．if(a == c) {System. out. print ("Equal") }

    D．if(c = b) {System. out. print("Equal") }


    正确答案：B
    解析：由于Java是强类型语言，String不能和char、int类型变量直接进行对比。但如果 char和int两类型在同一个表达式中运算，系统是可以进行自动类型转换的，因此这两个类型的变量可以比较。注意D选项的“=”是赋值运算符而不是相等比较运算符。

  • 第2题：

    About ________ of the workers in the factory were born in the ________.

    A.two-thirds, 1970 B.two-thirds, 1970s C.two-third,1970 D.two-third, 1970s


    正确答案：B

  • 第3题：

    As there was a power failure in the hospital, the doctor had to （）operation.

    Acall for

    Bcall off

    Ccall on

    Dcal lout


    B
    略

  • 第4题：

    前缀列表{ip ip-prefix}的命令格式为 ip ip-prefix ip-prefix-name[index index-number]{permit|deny}ipv4-address mask-length[greater-equal greater-equal-value][less-equal less-equal-value]，如果仅指定了greater-equal未指定less-equal，则前缀范围为（）

    A.[0，greater-equal-value]

    B.[mask-length.greater-equal-value]

    C.[greater-equal-value，32]

    D.无限制


    参考答案：C

  • 第5题：

    12． About_______ of the workers in the factory were born in the __________．

    A． two- thirds;1970

    B． two- thirds ; 1970s

    C． two-third ; 1970

    D． two-third ; 1970s


    正确答案：B
    12．B【解析】句意：工厂里大约2/3的工人出生在20世纪70年代。分数的表达为分子用基数词，分母用序数词，如果分子大于1，则分母要用复数，排除C、D，年代的表达要在年份后加s．故选B。

  • 第6题：

    下述语句中，（）可以在字符串s1和s2相等时显示"Equal."。

    A．if(!strcmp(s1,s2)) puts(“Equal.”);

    B．if(s1==s2) puts(“Equal.”)

    C．if(*s1==*s2) puts(“Equal.”)

    D．if(strcmp(s1,s2)) puts(“Equal.”);


    B

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