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【单选题】
有一质量均匀分布的圆形薄板,若将其中央挖掉一个小圆,则薄板的余下部分 ( )
A.
重力减小,重心随挖下的小圆板移走了
B.
重力和重心都没改变
C.
重力减小,重心位置没有改变
D.
重力减小,重心不存在了
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【单选题】It’s really unwise of some teenagers from low-income families to spend a large sum of money on Apple products ______ they could buy other cheaper brands.
A.
unless
B.
when
C.
so that
D.
in case
【单选题】A collection of all state probabilities for a given system at any given period of time is called the
A.
transition probabilities
B.
vector of state probabilities
C.
fundamental matrix
D.
equilibrium condition
E.
None of the above
【简答题】This year some twenty-three hundred agers from all over the world will spend about ten months in US homes through an exchange program. They will attend US schools ,meet US agers, and form impr...
【单选题】Some teenagers___ from home after a fight with their parents.
A.
come
B.
go
C.
run away
D.
go to
【多选题】The statements below compare and contrast link state and distance vector routing protocols. Which of these are true?()
A.
Distance vector protocols send the entire routing table to directly connected neighbors.
B.
Distance vector protocols are responsible for sending updates to all networks listed in the routing table.
C.
Link state protocols are responsible for sending the entire routing table to the whole network.
D.
Link state protocols send updates regarding their own links status to all other routers on the network.
【单选题】Some teenagers from home after a fight with their parents.
A.
s ome
B.
go
C.
run away
D.
go to
【简答题】材料分析题。小明努力学习,遇到不会的数学题问老师,老师想到一种新思路便讲解给小明,但小明仍不会。老师讲两遍后小明仍未听懂,老师就说:“那你把答案记住就行了”。请用心理学的相关知识分析该老师的行为。假如你是老师,你怎么做?
【简答题】中小学的设计规范规定,当走廊为内廊时,其净宽为不小于 mm ,当走廊为外廊时,其净宽为不小于 mm 。
【多选题】Which two of the following are true regarding the distance-vector and link-state routing protocols?(Choose two.)
A.
Link state sends its complete routing table out all active interfaces on periodic time intervals.
B.
Distance vector sends its complete routing table out all active interfaces on periodic time intervals.
C.
Link state sends updates containing the state of their own links to all routers in the internetwork.
D.
Distance vector sends updates containing the state of their own links to all routers in the internetwork.
【单选题】Some teenagers from home after a fight with their parents. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
c ome
B.
go
C.
run away
D.
go to prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
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