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【单项选择题】

How does an icebreaker normally free a ship which has become beset while navigating independently?（）

A、A.By backing down the track and cutting out ice on either bow

B、B.By approaching from the stern and crossing ahead at an angle of 20° to 30° to the beset ship's course

C、C.By overtaking the beset ship，running ahead and then backing down the track to the beset vessel

D、D.By approaching the vessel from astern and towing the beset vessel stern first

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第1题
[单选题] An icebreaker displaying a flag hoist which consists of the code letters “WO” (Whiskey Oscar) is indicating that（）.

A、icebreaker support is finished  B、icebreaker support is commencing  C、the icebreaker is icebound  D、the icebreaker is beset  

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第2题
[单选题] How does an icebreaker normally free a ship which has become beset while navigating independently?（）

A、By backing down the track and cutting out ice on either bow  B、By approaching from the stern and crossing ahead at an angle of 20°to 30°to the beset ship's course  C、By overtaking the beset ship，running ahead and then backing down the track to the beset vessel  D、By approaching the vessel from astern and towing the beset vessel stern first  

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第3题
[单选题] –How long does the bus?-（）About half an hour.

A、spend  B、take  C、use  

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第4题
[单选题] By default, how often does an ERX Edge Router send an OSPF link-state advertisement in a stable network?（）

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第5题
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第6题
[单选题] In BGP graceful restart, how does a peer router indicate the end of a route exchange?（）

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第8题
[单选题] （）does it take to change the main engine from ahead to astern?

A、How many times  B、How much water  C、How long  D、How length  

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第9题
[单选题] You completed your workflow definition. You want to save a copy of the definition to the file system for source control purposes. How does Oracle Workflow Builder save that file?（）

A、as a flat file  B、as a BPEL-compiled definition  C、as an XML file with an associated document type definition (DTD)  D、as an XML file without an associated document type definition (DTD)  

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