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【单选题】
在 Excel2010 中,单元格中出现的 #N/A 是指在函数或公式中没有( )时产生的错误信息A.
被 0 除
B.
被 0 乘
C.
可用数值
D.
以上都不对
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反馈参考答案：
举一反三
【多选题】新民主主义社会时期，社会主义因素与资本主义因素之间的斗争主要表现为( )。
A.
限制与反限制的斗争
B.
改造与反改造的斗争
C.
繁荣经济与落后生产方式的斗争
D.
敌我矛盾斗争
【多选题】which two statements about link-state routing protocols are true?(choose two)
A.
Each router determines its own path to a destination
B.
Link-state routing protocols use split horizon to avoid routing loops
C.
Each router shares a database of known routes
D.
Each router is aware only of its neighbor routers
E.
Each router maintains its own unique routing database
【单选题】What did the man want to do?
A.
To buy a bike.
B.
To borrow a bike.
C.
To sell a bike.
【简答题】下列一组选项中,是人体维生素D的最好供给的食物是( )。
【多选题】Which of the following protocols are examples of TCP/IP transport layer protocols? (Choose two answers)________
A.
Ethernet
B.
HTTP
C.
IP
D.
UDP
E.
SMTP
F.
TCP
【多选题】Which two statements about IPv6 and routing protocols are true? (Choose two.)
A.
EIGRPv3 was developed to support IPv6 routing.
B.
OSPFv3 was developed to support IPv6 routing.
C.
Loopback addresses are used to form routing adjacencies.
D.
EIGRP, OSPF, and BGP are the only routing protocols that support IPv6.
E.
Link-local addresses are used to form routing adjacencies.
【简答题】第一个被科学家发现的氨基糖苷类抗生素是 。
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