IS - IS creates and maintains adjacencies and neighbor relations by using the Hello protocol. For the following options, which are Hello packets used in IS - IS?()
A generic Hello
B. Point - to - point Level 1, point - to -point Level 2, LAN Level 1, LAN Level 2
C. Point - to - point Level 1, point - to - point Level 2, LAN
D. Point - to - point, LAN Level 1, LAN Level 2
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机械设备灌浆是在()之后。
A. 设备吊装就位
B. 设备清洗
C. 安装精度调整与检测
D. 零部件装配
血粉的氨基酸组成很不平衡,主要不平衡的两种氨基酸是()
A. Lys与Arg
B. Met与Cys
C. Thr与Ala
D. Leu与Ile