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【单选题】
提出“长技以制夷”的是()。A.
B.
C.
D.
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皮皮学刷刷变学霸
举一反三
【简答题】根据外汇风险的产生原因，外汇风险大致上可以分为外汇（）风险和外汇（）风险。
【单选题】The father helped his children________thenew bicyclethey bought online.
A.
set
B.
replace
C.
assemble
D.
install
【单选题】Not until yesterday ________ anything about thenew advertising campaign.
A.
I learned
B.
have I learned
C.
did I learned
D.
that I learned
【简答题】ener_etic
【单选题】These children are so full of__________ that they cannot keep still．
A.
power
B.
energy
C.
force
D.
strength
【单选题】单相异步电动机空载或在外力帮助下能启动， 但电机转向不定，可能原因是( )。
A.
(A)启动绕组开路
B.
(B)工作绕组开路
C.
(C)电源开路
D.
(D)工作绕组短路
【单选题】Several scientists are working together to create ______ they hope will be the cheapest form of energy in the near future. [ ]
A.
which
B.
that
C.
what
D.
as
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