单项选择题

A ______ is a type of ship that can travel both above and below the surface of the sea.

A．subway
B．submarine
C．subtitle
D．subordinate

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单项选择题

下面的命令，（）是正确的。 A.
switch#spanning-tree vlan 1 priority 4096 B.
switch(config)#spanning-tree vlan 1 priority 4096 C.
switch#spanning-tree vlan 1 priority 16 D.
switch(config)#spanning-tree vlan 1 priority 16

Interviewer: Good. What work experience have you got?
You: 2 _________________________ before I came to college.

答案： I worked as a librarian for one year