• 2021-04-14
    关于图示多点控制线路,以下说法正确的是()。a0b50a22c97a19b430...SB4,SB5,SB6)并联实现多点起动
  • 左图将分散在不同地点的停止按钮(SB1,SB2,SB3)串联实现多点停止 --- 图中接触器KM常开触点起到自锁作用 --- 左图将分散在不同地点的起动按钮(SB4,SB5,SB6)并联实现多点起动 --- 右图将分散在不同地点的起动按钮(SB4,SB5,SB6)串联实现三个操作者同时按下按钮才能起动

    内容

    • 0

      填入适当的介词 deprive sb ________ sth rob sb _______ sth remind sb _______ sth notify sb _______ sth accuse sb ________ sth

    • 1

      以下关于“我很荣幸地代表某某向来自某地方的某人表示热烈的欢迎。”的英语表述,正确的是 A: On behalf of sb, I have the honor to express warm welcome to sb from sp. B: On behalf of sb, I I feel greatly honored to expresswarm welcome to sb from sp. C: On behalf of sb, I have the honorto extend warm welcome to sb from sp. D: On behalf of sb, I feel greatly honored to extend warm welcome to sb from sp.

    • 2

      呼吸性碱中毒中() A: AB>SB B: AB<SB C: A D: SB均正常 E: A F: SB均低于正常 G: A H: SB均高于正常

    • 3

      分析下面的Java程序段,编译运行后的输出结果是( )。public class Test {public void changeString(StringBuffer sb) {sb.append("stringbuffer2");}public static void main(String[] args) {Test a = new Test();StringBuffer sb = new StringBuffer("stringbuffer1");a.changeString(sb);System.out.println("sb = " + sb);}} A: sb = stringbuffer2stringbuffer1 B: sb = stringbuffer1 C: sb = stringbuffer2 D: sb = stringbuffer1stringbuffer2

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      急性呼吸性酸中毒时,AB和SB变化特征为: A: AB(实际碳酸氢盐)升高 B: SB(标准碳酸氢盐)升高 C: AB<SB D: AB>SB E: AB↓、SB↓、AB=SB