矩磁材料是指磁滞曲线呈矩形的磁性材料，它主要用来作（）。
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排球比赛场地发球区宽度为（）m。
A. 3
B. 6
C. 9
D. 无限延长
（EMB145）发动机转子的（）传递推力。
A. 球轴承
B. 棍棒轴承
C. 两者都可以
我们说坚定制度自信，是因为我们的制度完美，已经是成熟定型的制度。
A. 正确
B. 错误
Your boss， Miss ，is interested in CEF. What should you tell her？ （）
A. The FIB lookup is based on the Layer 3 destination address prefix （shortest match）.
B. The adjacent table is derived from the ARP table.
C. The FIB table is derived from the IP routing table.
D. When the adjacency table is full， a CEF TCAM table entry points to the Layer 3 engine to redirect the adjacency.
E. CEF IP destination prefixes are stored in the TCAM table， from the least specific to the most specific entry.
F. When the CEF TCAM table is full， packets are dropped.
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