初次申领机动车驾驶证的驾驶人在12个月实习期内,应该遵守哪些特别的规定?
潜油电缆检修时直流耐压值为()。 ["20kVDC/5min","15kVDC/5min","22kVDC/5min","14kVDC/5min"]
在天气描述图里,IFR表示的云底高为(). ["小于1000ft","在1000~3000ft","大于3000ft"]
柜员密码更换的最长期限为()。 ["A、半年","B、三十天","C、一个月","D、一年"]
潜油电缆井上常见故障有几种()。 ["2","3","4","5"]
试述液化气罐检查或检修前应做好哪些准备工作?