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【单选题】

The range of a SSB transmission is MOST affected by().

A、atmospheric noise and radiated power

B、the frequency band selected and time of day or night

C、interference and position of the moon

D、radiated power and nearness to shore

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第1题

A、Create a new VLAN for the out-of-range users.  B、Add a wireless access point for the out-of-range users.  C、Upgrade the out-of-range users’ SSID searching software.  D、Enable network sharing on the users’ computers that are within range.  

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第2题

A、It returns an error because the range partitions P1 and P2 should be of the same range.  B、It creates two range partitions (P1, P2). Within each range partition, it creates monthwise subpartitions.  C、It creates two range partitions of varying range. For data beyond '1-1-2007,' it creates partitions with a width of one month each.  D、It returns an error because the number of tablespaces (TBS1,TBS2,TBS3)specified does not match the number of range partitions (P1,P2) specified.  

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第3题

Athe best fix is obtained by using a tangent bearing and a range  B、and using two radar ranges for a fix,the objects of the ranges should be close to reciprocal bearings  C、and using ranges,the most rapidly changing range should be measured last  D、and crossing a radar range of one object with the visual bearing of a second objectthe two objects should be 80°to 110°apart  

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第4题

A、nominal range  B、luminous range  C、geographical range  D、visible range  

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第5题

Aabove the explosive range  B、within the explosive range  C、below the explosive range  D、None of the above  

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第6题

Aabove the explosive range  B、within the explosive range  C、below the explosive range  D、None of the above  

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第7题

A、Luminous range  B、Geographic range  C、Nominal range  D、Meteorological range  

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第8题

A、10000000-11101111  B、11000000-11101111  C、10000000-10111111  D、10000000-11111111  E、11000000-10111111  

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第9题

A、not drop the anchor until the lights are in line  B、ensure your ship will NOT block the channel or obstruct the range while at anchor  C、drop the anchor immediately as the range lights mark an area free of obstructions  D、drop the anchor immediately as a change in the position of the range lights will be an indication of dragging anchor  

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