在中性点接地系统中，重复接地的电阻不应大于（）Ω。
A、10
B、0.5
C、30
D、4
参考答案：A
With the summer coming, May 19th was the ideal date to ______ China’s National Tourism Day. This year’s theme was “Beautiful China: Relaxing and Tourist Friendly”.
A．reflect
B．make
C．represent
D．mark
发生谵妄的患者出现的错觉和幻觉以错听和幻听较常见。()
