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【单选题】
Which of the followings is one of the characteristics of settlement by letters of credit? ( )A.
seller’s liabilities for payment
B.
L/C is a document transaction
C.
buyer’s liabilities for payment
D.
L/C is a cargo transaction
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举一反三
【简答题】Ca[CO3]的矿物名称___________或者___________。
【单选题】The boy promised _______ him more help.
A.
give
B.
to give
C.
that he give
D.
that he gives
【单选题】—Can you tell me _____________? —We are very good friends.
A.
how you get on with Joe
B.
who your best friend is
C.
what you are going to be
D.
what he looks like
【单选题】The boy promised his father____with others any more.
A.
not to fight
B.
to not fight
C.
not fight
D.
no fight
【简答题】Ca[CO3]的矿物名称___________或者___________。
【简答题】引入电压串联负反馈可改善放大电路性能,使增益稳定性 、非线性失真 、通频带 、输入电阻 、输出电阻 。
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