（）of the following messages is allowed to be transmitted on the radiotelephone without the authority of the Master...

第1题

[单选题] Which m>ofm> m>them> m>followingm> commands will display, in MB, m>them> total, used, and free blocks m>ofm> m>them> currently mounted filesystems?（）

A、df -m B、du -m C、df -vm D、du -vm

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第2题

[单选题] Which m>ofm> m>them> m>followingm> equipment can not be used for m>them> waste heat recovery m>ofm> m>them> M/E to furm>them>r improve its m>them>rmal efficiency?（）

A、M/E turbocharger B、exhaust gas boiler C、incinerator D、fresh water generator

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第3题

[单选题] Some radio waves（）m>them> surface m>ofm> m>them> earth because m>ofm> its（）.

A、are capable m>ofm> m>followingm> / distance B、can follow / altitude C、can hardly follow / shape D、are unable m>followingm> / angle

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第4题

[单选题] Classification m>ofm> vowels is made up m>ofm> m>them> m>followingm> EXCEPT（）。

A、m>them> openness m>ofm> m>them> mouth B、m>them> position m>ofm> m>them> tongue C、m>them> shape m>ofm> m>them> tip D、m>them> width m>ofm> m>them> vowels

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第5题

[单选题] An AIX system administrator needs to adjust m>them> maximum amount m>ofm> memory that can be pinned. Which m>ofm> m>them> m>followingm> commands is used to make m>them> change？（）

A、 vmtune -M B、 svmon -m C、 vmstat -s D、 schedtune -m

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第6题

[单选题] What describes a flood current（）.

A、Horizontal movement m>ofm> m>them> water toward m>them> land after high tide B、Horizontal movement m>ofm> m>them> water toward m>them> land after low tide C、Horizontal movement m>ofm> m>them> water away from m>them> land m>followingm> high tide D、Horizontal movement m>ofm> m>them> water away from m>them> land m>followingm> low tide

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第7题

[] When a hydraulic vane pump is working, which m>ofm> m>them> m>followingm> is in contact with m>them> vanes?（） (1) m>them> rotor (2) m>them> internal surface m>ofm> m>them> housing (3) m>them> external surface m>ofm> m>them> housing When a hydraulic vane pump is working, which m>ofm> m>them> m>followingm> is in contact with m>them> vanes?（） (1) m>them> rotor (2) m>them> internal surface m>ofm> m>them> housing (3) m>them> external surface m>ofm> m>them> housing

A、A.(1) only B、B.(2) only C、C.(1) and (2) D、D.(1), (2) and (3)

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第8题

[] Give m>them> description m>ofm> m>them> m>followingm> sound segments in English. [k];[z];[w];[u:];[i]

A、Give m>them> description m>ofm> m>them> m>followingm> sound segments in English. B、[k];[z];[w];[u:];[i]

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第9题

[单选题] m>Followingm> m>them> failure m>ofm> one turbocharger on a large, crosshead, main propulsion diesel engine, fitted with multiple turbochargers, which m>ofm> m>them> m>followingm> actions should be taken prior to furm>them>r operation m>ofm> m>them> engine? （）

A、Blank m>ofm>f m>them> exhaust gas inlet to m>them> damaged turbocharger B、Secure cooling and lubrication to m>them> damaged turbocharger C、Lock m>them> rotor m>ofm> m>them> damaged turbocharger D、All m>ofm> m>them> above

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第10题

[] Observe m>them> structure m>ofm> m>them> table employees: m>Them> table contains 8475 records. One m>ofm> m>them> employees wants to know m>them> names m>ofm> all employees m>ofm> m>them> company. For this, he fires m>them> m>followingm> query: SELECT * FROM EMPLOYEES ORDER BY emp_fname; Since m>them> operation performed on executing m>them> query cannot fit into memory, it requires disk space to complete m>them> operation. Which m>ofm> m>them> m>followingm> types m>ofm> segments will Oracle allocate to complete m>them> operation and to provide m>them> required result?（） Observe m>them> structure m>ofm> m>them> table employees: m>Them> table contains 8475 records. One m>ofm> m>them> employees wants to know m>them> names m>ofm> all employees m>ofm> m>them> company. For this, he fires m>them> m>followingm> query: SELECT * FROM EMPLOYEES ORDER BY emp_fname; Since m>them> operation performed on executing t

A、A. Rollback segment B、B. Temporary segment C、C. Data segment D、D. Index segment

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（）of the following messages is allowed to be transmitted on the radiotelephone without the authority of the Master.

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