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基础知识,章节练习,土木工程师（水利水电）现代技术基础,电气技术基础

A.
B.
C.
D.
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What are the reasons for the emergence of Internet marketing?
A．emergence and development of the Internet
B．changes in consumer values
C．search engine generation and development
D．increasing competition in the trading market
单项选择题
The term strake is used in reference to ______．A.rudder mountingsB.anchor gearC.hull platingD.vessel framing
A.A.rudder
B.anchor
C.hull
D.vessel
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