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【单选题】

（）is an indication that the weather is about to clear.

A、Rising clouds

B、Lowering clouds

C、Thickening clouds

D、Scattering clouds

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更多“（）is an indication that the weather is about to clear.”相关的问题
第1题
[单选题] Which statement about OSPF ASBR summary LSA is true？（）

A、It is generated by an ASBR and indicates the reachability to an ABR located in another area.  B、It is generated by ABR and indicates the reachability to an ASBR located in another AS.  C、It is generated by ABR and indicates reachability to itself.  D、It is generated by ABR and indicates the reachability to an ASBR located in another area.  E、It is generated by ASBR and indicates the reachability to an ABR.  

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第2题
[] During an attempt to 'scp' between two hosts, an error indicating PRNG is not seeded is displayed. What is the likely cause of the error?（） During an attempt to 'scp' between two hosts, an error indicating PRNG is not seeded is displayed. What is the likely cause of the error?（）

A、A.The sshd user id is locked.  B、B.The /var/empty directory needs to be created.  C、C.PRNG is set to 'no' in the /etc/ssh/sshd_config file.  D、D.The permissions on /dev/random and /dev/urandom are incorrect.  

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第3题
[单选题] A combination combustible gas and oxygen indicator is an instrument that measures the（） of both combustible gas and oxygen; each is indicated on a separate meter.

A、purifies  B、combinations  C、concentrations  D、filters  

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第4题
[单选题] A ground in an electrical circuit outside the engine room （）.

A、cannot be detected tinder normal conditions  B、is of no consequence to engineering personnel  C、is indicated at the branch circuit breaker panel  D、is indicated by the ground detecting lamps on the main switchboard  

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第5题
[] A wobbling tail shaft is an indication of（）.

A、A.shallow water  B、B.an engine that is misfiring  C、C.a tight tail shaft gland  D、D.worn stern bearing or misalignment  

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第6题
[单选题] What is the best instrument for establishing a safe working area before welding in a confined space? （）

A、An oxygen indicator  B、A combustible gas indicator  C、A combination combustible gas and oxygen indicator  D、A flame safety lamp  

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第7题
[单选题] An authentication request for a PPP over ATM client has been returned to the router with an address of 255.255.255.254. What does this indicate to the router?（）

A、A static IP address is used.  B、An unnumbered address is used.  C、The returned RADIUS address is used.  D、The IP address-pool configuration is used.  

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第8题
[单选题] Combustible gas indicators operate by drawing an air sample into the instrument（）.

A、over an electrically heated platinum filament  B、where it is mixed with nitrogen  C、where it is ignited by a sparking device  D、where its specific gravity is measured  

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第9题
[判断题] Usually low key is used for emphasis and contrast; mid key indicates an expected, neutral attitude; and low key provides low information.（）

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