应用SH/T0713汽油中苯及甲苯含量气相色谱法中,反吹阀完成反吹动作后,基线出现波动的原因是()。
A. 两根柱流量不一致
B. 色谱柱堵
C. 反吹时间不对
D. 反吹阀漏
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Wide Area Network (WAN) is a computer network that covers a broad areA. Which statement is correct for wide-area network (WAN)?()
A. Limited in a single building, a group of buildings, or even a single room
B. Crosses metropolitan, regional, or national boundaries
C. Encompasses an entire city or metropolitan area and connects multiple local-area networks (LANs)
D. Connects client devices wireless protocol
IEC 61850 9-1标准规定了合并单元和间隔层装置通信协议栈的构成,该协议栈在OSI七层哪一层有对应()
A. 会话层
B. 传输层
C. 网络层
D. 链路层
在《安徽省遏制与防治艾滋病“十三五”行动计划》中提到居民艾滋病防治知识知晓率达()%以上。
A. 75
B. 85
C. 95
D. 100
库房管理必须坚持双人管库、同进同出、(),做到账账、账款、账实相符。