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【单选题】
患者男性,60岁,COPD,并发呼吸衰竭患者,其CO2潴留的皮肤及面部征象不表现为A.
皮肤干燥
B.
皮肤潮红
C.
多汗
D.
发绀
E.
眼球结膜充血水肿
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【单选题】Be careful! Don't cut ________ with thenew knife.
A.
you
B.
yourself
C.
your
D.
yours
【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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