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【简答题】
为了减少和消除死区,功率方向继电器通常采用 接线方式,习惯上采用α=ψset-90° , α 称为功率方向继电器的 ,要使率方向继电器在各种相间短路情况下均能动作, α 应满足 。当加入继电器电流端子上的电流为Ic 时,加入继电器的端子电压是 。
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【简答题】何谓八会穴？临床如何运用？
【单选题】This article has proved ___.
A.
far most useful
B.
the most usefully
C.
most useful
D.
most carefully
【单选题】students in our class come from this city. [ ]
A.
The most
B.
Most of
C.
Most
D.
Most the
【单选题】We found the ruins ____.
A.
the most interest
B.
most interested
C.
most interesting
D.
of most interesting
【简答题】何谓八会穴?临床如何运用?
【单选题】He bought some books, ______ were expensive.
A.
most of which
B.
the most of which
C.
most
D.
the most of that
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