A、The area cannot be a backbone area.
B、Inter area routes are suppressed.
C、The area has no more than 10 routers.
D、No virtual links are allowed.
E、No autonomous system border routers are allowed.
F、Redistribution is not allowed unless the packet is changed to a type 7 packet.
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A、three all-round red lights instead of the lights required for a power-driven vessel of her class B、the same lights as a vessel restricted in her ability to maneuver C、three all-round red lights in addition to the lights required for a power-driven vessel of her class D、the lights for a power-driven vessel which is not under command
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A、A WHERE clause can be used to restrict both rows and groups. B、A WHERE clause can be used to restrict rows only. C、A HAVING clause can be used to restrict both rows and groups. D、A HAVING clause can be used to restrict groups only. E、A WHERE clause CANNOT be used in a query if the query uses a HAVING clause. F、A HAVING clause CANNOT be used in subqueries.
A、A WHERE clause can be used to restrict both rows and groups. B、A WHERE clause can be used to restrict rows only. C、A HAVING clause can be used to restrict both rows and groups. D、A HAVING clause can be used to restrict groups only. E、A WHERE clause CANNOT be used in a query of the query uses a HAVING clause. F、A HAVING clause CANNOT be used in subqueries.
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