在500KV变电站监控系统现场验收试验中，可用性试验要求系统在连续运行2200小时期间，系统可用率大于99.75%。
参考答案：对
选词填空。
1. — What's his name?
— __________ (Her, His, My) name is Li Ming.
2. — What's __________ (her, his, your) name?
— My name is Jenny.
3. — What's her name?
— __________ (Her, His, My) name is Kate.
4. This is a __________ (boy, girl). His name is Li Lin.
5. This is a __________ (boy, girl). Her name is Ling Ling.
多潘立酮(吗丁啉)
A．H2受体拮抗药B．黏膜保护药C．质子泵抑制药D．抗酸药E．多巴胺受体拮抗药
