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【简答题】
奉帚平明金殿开,且将团扇共徘徊。 ,犹带昭阳日影来
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皮皮学刷刷变学霸
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【单选题】目前,城市轨道交通中车地通信方式比较可靠且维护成本较低,并大量使用的是下面哪种?
A.
感应环线通信
B.
裂缝波导通信
C.
无线电台通信
D.
漏泄电缆通信
【简答题】Consider a computer with an 8-bit address space and a direct-mapped -byte data cache containing 16-byte cache blocks.Q1. How many sets are in the cache?______(number only)
【简答题】Before you consider purchasing a computer, you will need to decide what kind of computer is the most suitable for you.
【单选题】已知 R 元素在化合物中只有一种化合价,请判断下列化学式中书写不正确的是 [     ]
A.
R 2 O 3
B.
R 2 C1 3
C.
R 2 (SO 4 )3
D.
R(NO 3 ) 3
【单选题】Why does cognitive psychology consider the computer to be good analogy of the human brain?
A.
It records information as binary code
B.
It stores vast quantities of information
C.
Its operations cannot be seen
D.
It processes input and generates output
【单选题】下列物质的化学式中,书写不正确的是
A.
氢氧化钠 Na(OH) 2
B.
氮气 N 2
C.
氧化镁 MgO
D.
氯化钠 NaCl
【单选题】下面哪种通信方式成本低?
A.
串行通信
B.
并行通信
【单选题】下列化学式中,书写不正确的是( )。
A.
氧化钙(CaO)
B.
氧化镁(MgO)
C.
氯化铁(FeCl2)
D.
三氧化硫(SO3)
【单选题】下列物质的化学式中,书写不正确的是
A.
氧化镁MgO
B.
氯化铁FeCl 2
C.
氢气 H 2
D.
食盐 NaCl
【单选题】My family consider __ a computer, which is considered __ a great help in our work.
A.
buying; to be
B.
buying; being
C.
to buy; being
D.
to buy; to be
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