What does a scientific method involve?

A . Stores data on the network and connects the local-area network (LAN) to the wide-area network (WAN) B . Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN) C . Broadcasts data to all devices that are connected to it across the local-area network (LAN) and wide-area network (WAN) D . Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-area network (LAN) to the wide-area network (WAN)

A . Providing a temporary network need B . Ensuring secure presentations C . Having freedom of movement within a network range D . Augmenting an existing network

A . 正确 B . 错误

A . SNR B . noise floor C . level of interference D . Received Signal Strength Indicator

A . It transmits "SOS" and the vessel's name and position in slow speed Morse Code B . It will appear on a radar unit's PPI as a line of dots radiating outward with the innermost dot indicating the SART's position C . It will appear on a radar unit's PPI as a line of dots radiating outward with the outermost dot indicating the SART's position D . None of the above

A .  The backup set has exceeded the retention criteria set in RMAN and is eligible for removal.  B .  The backup set has one or more invalid blocks in it and is not usable for recovery. C .  The backup set contains one or more tablespaces no longer in the database. D .  The backup set contains one or more missing backup set pieces. E .  The backup set is from a previous version of RMAN and was not upgraded.

A．Parents play a key role in a child's longevity. B．People with religious belief usually live longer. C．The way of life contributes most to longevity. D．The length of life is strongly linked with genes.

B．Reduce

A．It is a young man he likes best. B．It is just the name of his job. C．It is a popular American film.

A．The restaurant was very well managed. B．All the restaurant workers were busy. C．McDonald's was a famous restaurant.

A．She thinks she will go to her uncle's first. B．She'll have a visitor and can't leave on Thursday. C．She will have an appointment with her friend. D．She will be happy to go with the man on Thursday.

A.experiment B.experience C.advantage