摄像机根据演播室环境设计其基准色温，其实基准色温是（）.
A. 2800K
B. 3200K
C. 4000K
D. 5600K
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固井质量不好易发生套管损坏和腐蚀，但不会引起油气水互窜。
A. 正确
B. 错误
在汽车行驶中，不宜采用发动机牵阻作用来制动的情况是（）。
A. 冰雪路面
B. 潮湿路面
C. 紧急制动
D. 下坡行驶
Which statements are true about EIGRP successor routes?（）
A successor route is used by EIGRP to forward traffic to a destination.
B. Successor routes are saved in the topology table to be used if the primary route fails.
C. Successor routes are flagged as "active" in the routing table.
D. A successor route may be backed up by a feasible successor route.
E. Successor routes are stored in the neighbor table following the discovery process.
F. Successors are not used in EIGR
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