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【单选题】
兴奋性突触后电位(EPSP)的形成是因为()
A.
突触后膜对 Na + 通透性升高,局部去极化
B.
突触后膜对 Cl - 通透性升高,局部去极化
C.
突触后膜对 Cl - 通透性升高,局部超极化
D.
突触后膜对 K + 通透性升高,局部超极化
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举一反三
【单选题】In 1969, the first British soldiers were see on Northern Ireland street . They came first ______
A.
to maintain traffic order in Northern Ireland
B.
to protect Catholics
C.
to protect Protestants
D.
to replace the Royal Ulster Constabulary since they were unable to keep social order
【判断题】链传动的承载能力与链排数成反比
A.
正确
B.
错误
【单选题】顺序喷射燃油系统中的每一缸的喷油时刻()
A.
进气行程下止点
B.
压缩行程下止点
C.
进气行程上止点
D.
压缩行程上止点
【单选题】The Open University in Britain was founded in 1969. Was it the first university in the whole world for distance education ?
A.
Yes
B.
No
【单选题】What CBS anchor reported the assassination of President Kennedy in 1963, the first moon landing in 1969, and the election of Ronald Reagan in 1980?
A.
Dwight D. Eisenhower
B.
Edward R. Murrow
C.
Walter Cronkite
D.
Charles Foster Kane
【单选题】The first subway in China was in Beijing in 1969.
A.
built
B.
building
C.
build
D.
builds
【简答题】A: The first person walked on Mars in 1969. B: You mean that the first person walked on the______ in 1969.
【单选题】In 1969, the first British soldiers were seen on the Northern street. They came first _____.
A.
to maintain traffic order in Northern Ireland
B.
to protect Catholics
C.
to protect Protestants
D.
to replace the Royal Ulster Constabulary since they were able to keep social order
【单选题】顺序喷射燃油系统中的每一缸的喷油时刻( )
A.
圧缩行程上止点
B.
进气行程上止点
C.
进气行程下止点
D.
压缩行程下止点
【单选题】In 1969,the first British soldiers were seen on Northern Ireland street.They came first_____
A.
to maintain traffic order in Northern Ireland
B.
to protect Catholics
C.
to protect Protestants
D.
to replace the Royal Ulster Constabulary since they were unable to keep social order
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