A、two balls in a vertical line
B、two diamonds in a vertical line
C、a single black ball
D、no shape is shown during the day
更多“During the day，a dredge will indicate the side on which it is safe to pass by displaying（）.”相关的问题
A、Small sips at regular intervals during the day B、The complete daily ration at one time during the day C、One-third the daily ration three times daily D、Small sips only after sunset
A、only one high and one low water occur during a lunar day B、the high tide is higher and the low tide is lower than usual C、the high tide and low tide are exactly six hours apart D、two high tides occur during a lunar day
A、only one high and one low water occur during a lunar day B、the high tide is higher and the low tide is lower than usual C、the high tide and low tide are exactly six hours apart D、two high tides occur during a lunar day
A、only one high and one low water occur during a lunar day B、the high tide is higher and the low tide is lower than usual C、the high tide and low tide are exactly six hours apart D、two high tides occur during a lunar day
A、during the day，three balls in a vertical line B、during the day，three shapes，the highest and lowest being balls and the middle being a diamond C、when making way at night，two all-round red lights，sidelights，and a sternlight D、when making way at night，masthead lights，sidelights，and a sternlight
A、Wet clothes during the day to decrease perspiration B、Get plenty of rest C、Keep the entrance curtains open D、All of the above
A、Create a scheduled backup job as a normal backup. Copy the backup job, and modify the start date so that one job starts every day for the next 30 days. B、Create a scheduled backup job as a daily backup. Set the start date of the job for today, and set the end date for 30 days from today. C、Create a scheduled backup job as a copy backup. Copy the backup job, and modify the start date so that one job starts every day for the next 30 days. D、Create a scheduled backup job as a normal backup. Set the start date of the job for today, and set the end date for 30 days from today.
A、Only data files and the control file are backed up. B、Archived redo logs are backed up only I f the database is open during the backup. C、The backup is deleted after one day, regardless of the default retention policy settings. D、The backup becomes obsolete after one day, regardless of the default retention policy settings.
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