基站开关电源直流欠压告警处理时限城区为()小时,农村为()小时。 发布时间:2020-01-16 14:06 │ 来源:www.tikuol.com 题型:填空题 问题: 基站开关电源直流欠压告警处理时限城区为()小时,农村为()小时。
题型:填空题 完形填空。 A famous TV star once invited his girlfriend onto his show on April Fool's Day. He asked 1 to marryhim. She was 2 , because she really wanted to get married. 3 , when she said "yes", he replied "April Fool!" That little joke 4 a very happy ending. The TV star lost 5 his girlfriend and his show. ( )1. A. him ( )2. A. thrill ( )3. A. Yet ( )4. A. didn't have ( )5. A. each B. his B. thrilled B. But B. doesn't have B. every C. her C. thrilling C. And C. had C. both D. me D. thrills D. However D. has D. among 查看答案
题型:填空题 若NA表示阿伏加德罗常数的数值,下列说法正确的是[ ]A. NA个Cl2在常温常压下体积约为22.4LB. 在0℃、101kPa时,22.4L氢气中约含有2NA个氢原子 C. 25℃、1.01×105Pa,48g SO2中含有的原子数为3NA D. 22 g二氧化碳与标准状况下11.2LHCl含有相同的分子数 查看答案