A lookout can leave his station ______.A.at the end of the watchB.at any timeC.ONLY when properly relievedD.15 minutes before the end of the watch
A lookout can leave his station ______.
A.at the end of the watch
B.at any time
C.ONLY when properly relieved
D.15 minutes before the end of the watch
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It is important that shipment ( ) before the end of this month. A.will be made ( )B.must be madeC.can be made ( )D.be made
下列CASE语句中执行结果不为空的是() A、SELECTCASEWHEN125THEN'true'ELSE'false'END;B、SELECTCASEBINARY'B'WHEN'a'THEN1WHEN'b'THEN2END;C、SELECTCASEWHEN-10THEN'true'END;D、SELECTCASE'one'WHEN1THEN'one'WHEN2THEN'two'END;
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When designing a converged network， which measures can be taken at the building access layerto help eliminate latency and ensure end-to-end quality of service can be maintained？（）A、 rate limit voice trafficB、 configure spanning-tree for fast link convergenceC、 isolate voice traffic on separate VLANsD、 classify and mark traffic close to the source
Both bus and tree topologies are characterized by the use of multipoint (1).For the bus, all stations attach, through appropriate hardware (2) known as a tap, directly to a linear transmission medium, or bus. Full-duplex operation between the station and the tap allows data to be transmitted onto the bus and received from the(3). A transmission from any station propagates the length of the medium in both directions and can be received by all other (4). At each end of the bus is a (5) , which absorbs any signal, removing it from the bus.空白（1）处应选择（）A、mediumB、connectionC、tokenD、resource
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单选题What is the purpose of an explicit "deny any" statement at the end of an ACL？（）Anone，since it is implicitBto enable Cisco IOS IPS to work properly；however，it is the deny all traffic entry that is actually requiredCto enable Cisco IOS Firewall to work properly；however，it is the deny all traffic entry that is actually requiredDto allow the log option to be used to log any matchesEto prevent sync flood attacksFto prevent half-opened TCP connections
单选题If in any doubt as to the pilot’s actions or intentions，the officer in charge of the navigational watch shall（）.Anotify the master immediatelyBtake whatever action is necessary before the master arrivesCtake necessary actions at his/her discretionDseek clarification from the pilot
单选题A lookout can leave his station（）.Aat the end of the watchBat any timeCONLY when properly relievedD15 minutes before the end of the watch
单选题If the Charterer sends the vessel on her last voyage at a time when there is no expectation that she will be redelivered within a reasonable time of the end of the period of the Charterparty，and she is in fact redelivered late，he（）.Ahas properly fulfilled the contractBis not guilty of a breach of contractCis entitled a right to take legal action against any loss or damage he suffered in this connectionDis guilty of a breach of contract
单选题When amendments are made to the Shipboard Oil Pollution Emergency Plan，the revisions must be submitted to the Coast Guard（）.Aone month before the anniversary date of the planBsix months before the end of the approval periodCand cannot be implemented without approvalDand can be implemented without immediate approval as long as final approval is received within six months of submission
单选题That REMOVE ANY LIST ON THE V/L AFTER EACH WATCH END means that（）.Aany list，no matter where it is posted，shall be removed prior to ending his watch by the OOWBthe vessel should not be removedCany and all lists on board the vessel should be taken offDthe inclination of the vessel should be corrected prior to ending his watch by the OOW