A、A.A flashing amber light
B、B.A fixed red light
C、C.A white flag raised and lowered vertically
D、D.A flashing white light
更多“A drawbridge may use visual signals to acknowledge a vessel’s request to open the draw. Which signal indicates that the draw will NOT be opened immediately?（）”相关的问题
A、A.A flashing amber light B、B.A fixed red light C、C.A white flag raised and lowered vertically D、D.A flashing white light
A、It may advise the use of online table redefinition for tables in dictionary managed tablespace. B、It may advise the use of segment shrink for tables in dictionary managed tablespaces it the no chained rows. C、It may advise the use of online table redefinition for tables in locally managed tablespaces D、It will detect and advise about chained rows. E、It may advise the use of segment shrink for free list managed tables.
A、The procedure may be used for some components to relocate component data to the SYSAUX tablespace from its current tablespace. B、The procedure may be used for some components to relocate component data from the SYSAUX tablespace to another tablespace. C、All the components may be moved into SYSAUX tablespace. D、All the components may be moved from the SYSAUX tablespace.
A、It's of no use for navigation and would be removed with notice B、It's useful in navigation and may be removed without notice C、It's helpless in navigation and may be removed without notice D、It's helpful in navigation and may be removed without notice
A、 The VERSIONS BETWEEN clause may be used in DML statements. B、 The VERSIONS BETWEEN clause may be used in DDL statements. C、 The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables. D、 The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.
A、is ready to use but vessels must stand clear B、is ready to use and vessels may approach C、cannot be made ready immediately and vessels shall stand clear D、cannot be made ready immediately but vessels may approach
A、A. Either the -a or flag -b may be used, but not both. B、B. If the flag -a is used then the flag -b also must be used. C、C. One of the -a or -b flags must be used, but not both at the same time. D、D. Both the flags may be used together, but neither are mandatory.
A、may be substituted for 10 percent of the required life preservers B、should be stowed adjacent to lifeboats and emergency stations C、may be used by boat crews and line handlers during lifeboat drills D、should be used when carrying out duties near a weather deck's edge
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