【单选题】
（）are operated as a secondary method of alerting in the GMDSS.
A、satellite EPIRBs
B、Non-satellite EPIRBs
C、SES and DSC
查看正确答案A、has learnt B、have learnt C、learn D、are learning
搜题
更多“（）are operated as a secondary method of alerting in the GMDSS.”相关的问题
第2题
A、A.ItburnsupIPaddresses. B、B.ItconservesIPaddresses. C、C.Itresultsinasmallerroutingtable. D、D.EachPVChasaseparate/30subnet
第5题
A、The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percent B、The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstacles C、All levels of maintenance must be performed by a licensed GMDSS Radio Maintainer D、The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints
第6题
A、Global buffers such as the InnoDB buffer pool are allocated after the server starts, and are never freed B、Thread buffers are allocated when a client connects, and are freed when the client disconnects C、Buffers that are needed for certain operation are allocated when the operation starts, and freed when it ends D、User buffers are allocated at server startup and freed when the user is dropped E、All dynamic buffers that are set with a SET GLOBAL statement immediately get allocated globally, and are never freed
第7题
A、Failure of proper operation of propulsion and other essential machinery, as well as electrical installation B、Failure of the proper operation of the main and auxiliary steering gear C、Failure of engineering watch arrangements to confirm to the requirements specified for the ship by Administration D、Failure of the proper operation of emergency generator, lighting, batteries and switches
第8题
A、A. It saves disk space and reduces memory usage. B、B. It saves disk space but has no effect on memory usage. C、C. It incurs extra CPU overhead during DML as well as direct loading operations. D、D. It incurs extra CPU overhead during DML but not direct loading operations. E、E. It requires uncompress operation during I/O.
第9题
A、Personnel may work beneath suspended loads，as long as they are alert and wear hard hats B、If a suspended load with no tag begins to spin，personnel should attempt to stop the spinning if the load is within reach C、If tag lines are used to control a suspended load，they should be secured to the deck D、Personnel not involved in the hoisting operation should be kept clear of the transfer area
