The characteristic of a lighted cardinal mark may be ().
A、very quick flashing
B、flashing
C、fixed
D、occulting
A、very quick flashing
B、flashing
C、fixed
D、occulting
A、A. Transportable database B、B. Transportable tablespace C、C. Data Pump full export / import D、D. The DBMS_PDB package E、E. RMAN
A、Transportable database B、Transportable tablespace C、Data Pump full export/import D、The DBMS_PDB package E、RMAN
A、flashing amber light B、yellow light with the same characteristics as the sternlight C、all-round yellow light D、yellow light with the same characteristics as the masthead light
A、Indicates the limits of the navigable channel B、Indicates a danger area C、Is used to identify the characteristics of the light D、Serves no significant purpose
A、A."slow" direction, just before the 12 o'clock position B、B."fast" direction, just after the 12 o'clock position C、C."fast" direction, just before the 12 o'clock position D、D."slow" direction, just after the 12 o'clock position