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【单选题】
Which of the following risk is not the political risk in international trade?( )A.
war risk
B.
cancellation of import license
C.
transfer risk
D.
risk of non-acceptance
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【单选题】These flowers are in_spring.
A.
under full bloom
B.
in full bloom
C.
in fully bloom
D.
of full bloom
【简答题】根据工作信号频率范围滤波器可以分为:低通滤波器、 、带通滤波器及 。
【单选题】While driving, you are allowed to use your hand held mobile phone to .
A.
chat with your assistant
B.
make an emergency call
C.
look for a UHaul location
D.
receive and send messages
【单选题】These flowers are made .
A.
in different ways
B.
in different way
C.
by different way
D.
by different ways
【简答题】膈肌上有三个裂孔:( )、( )和( )。
【简答题】膈肌位于胸膜腔之间，上面形成______的底，下面形成______的顶，主要有三大裂孔，即___________、____________及__________。还有四个膈孔，两个前称为______________，两个在后称____________，是膈的薄弱环节。
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