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【单选题】
各种心脏病的X线表现，下列哪项正确：（）A.
二尖瓣狭窄风湿性心脏病时，扩张的左心房在心右缘形成双重轮廓
B.
动脉导管未闭，主要表现是主动脉弓变小
C.
Fallot四联症时肺血管影像是粗大的
D.
心房间隔缺损中，主要表现是左心房增大
E.
心内膜垫缺如引起右心房扩张
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【单选题】During the boot sequence, a Ezonexam 2800 series router needs to locate and load an operating system. What is the default order the router uses to find an operating system?
A.
ROM, TFTP server, Flash
B.
Flash, TFTP server, ROM
C.
Flash, NVRAM, TFTP server
D.
Flash, ROM, TFTP server
E.
Flash, TFTP server, RAM
【单选题】-Would you mind tuming down the music? - . ,I'll do it right away.
A.
It's a pleasure
B.
Here you are
C.
I'm sorry
D.
I'm glad to
【单选题】____down the radio. The baby's sleeping in the next room. [ ]
A.
Tuming
B.
To tum
C.
Turn
D.
Tumed
【单选题】During tuming operation, the coo lantshould be directed to the ( )o
A.
toolshank
B.
chuck
C.
cutting edge ofthe cutter
D.
chips
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