Prior to 802.1w，Cisco implemented a number of proprietary enhancements to 802.1D to improve convergence in a Layer 2 network. Which statement is correct？（）
Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?（）
Failure to open the diesel engine test cocks after a long period of shutdown, prior to starting may result in （）
If you（）a conflict prior to the meeting, discuss the issue with participants in advance.
Prior to a ship’s departure from any port （） should be tested with deck officer to ensure satisfactory operation.
Prior to boarding from a vessel，a davit-launched liferaft should be well ventilated of excess（）.
While underway at night you observe a vessel’s range lights in line off your starboard beam． You should（）.
What should be done prior to backing up an IOS image to a TFTP server?（）
Which organization would conduct a survey of the insulation in a reefer compartment prior to loading cargo? （）
A heater in the circuit facilitates warning of the engine prior to （） by circulating hot water.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
Prior to getting underway，the Master or person in charge of a ship must（）.
Prior to entering a davit-launched liferaft，you should make sure that（）.
Prior to lighting off a cold automatically fired auxiliary boiler, you should （）.
When lighting off an auxiliary boiler, which of the problems listed could cause the burners to sputter?（）
The time required for a lighted aid to complete a full cycle of light changes is listed in the Light List as the（）.
Which of the following should always be checked prior to starting a diesel engine?（）
What can be done in a computer prior to CAD
In order to reduce consumer feelings of uncertainty prior to purchasing a service, marketers can use _________.
Turn off the lights______ you go to bed.
71. How long are you prohibited to consume alcohol prior to serving as a member of a watch?
A dark suit is to a light one for evening wear.
I _____ her invitation to the dinner party because I had a prior appointment.
