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【单选题】
在网络中，把语音与计算机产生的数字、文字、图形与图像同时传输，必须先把语音信号数字化。可以把语音信号数字化的技术是( )。A.
曼彻斯特编码
B.
差分曼彻斯特编码
C.
脉冲编码调制 PCM
D.
幅度调制
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反馈参考答案：
举一反三
【单选题】FOB and CFR share one thing that ( )
A.
the seller will be responsible for the unloading at the port of destination
B.
they can be used in any mode of transport
C.
risk is transferred when the goods are loaded on board the vessel
D.
none of the above
【简答题】二、搭配题: Match the expressions with their translation.
【简答题】一堂结构精致的写作课,应该目标______,多任务构成清晰的主步骤,主步骤______ ,嵌入______的线索。
【多选题】FOB and CFR share things that ( ).
A.
Risk is transferred when the goods are loaded on board the vessel at the port of shipment.
B.
They can be used only for sea or inland waterway transport.
C.
The seller is not responsible for obtaining cargo insurance.
D.
They can be used in any mode of transport.
E.
The two terms should be followed by named places of destination
【简答题】Match the pictures with the phrases ( 搭配图片与短语 ) :
【简答题】Match the pictures with the phrases ( 搭配短语与图片 ) :
【单选题】FOB and CFR share one thing that ( ).
A.
risk is transferred when the goods are loaded on board the vessel
B.
they can be used in any mode of transport
C.
the seller will be responsible for the unloading at the port of destination
D.
none of the above
【简答题】搭配题 Read the passage-Reading A, and match each common disease with one body system.
【单选题】FOB and CFR share one thing that ( ).
A.
risk is transferred when the goods are loaded on board the vessle
B.
they can be used in any mode of transport
C.
the seller will be responsible for the unloading at the port of destination
D.
none of the above
【简答题】一堂结构精致的写作课，应该目标 ，多任务构成清晰的主步骤，主步骤功能区分明显，嵌入知识教学的线索。
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