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【单选题】
异位妊娠最常发生于：A.
子宫颈部
B.
卵巢
C.
腹腔
D.
输卵管
E.
子宫残角
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A.
how
B.
that
C.
when
D.
what
【单选题】图示二端网络N与M相联且φ= -135°,则可以看出( )
A.
Ｍ为无源感性网络,Ｎ为有源网络
B.
Ｍ为无源容性网络,Ｎ为有源网络
C.
Ｍ为有源网络,Ｎ为无源感性网络
D.
Ｍ为有源网络,Ｎ为无源容性网络
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【单选题】A clumsy (heavy, stupid, unskillful) workman is likely to fid fault with his tools. 2 John was a deft (skilful, clever, ready) mechanic; he was hired by the joint- ven ture in no time. 3. T he writer ...
A.
unskilful
B.
skilful
C.
vague
D.
tricky
E.
accurate
F.
alteration
G.
ambitious
H.
conscientious
I.
want of knowledge
J.
drawbacks
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