皮皮学，免费搜题
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【单选题】
气体扩散速率与下列因素的关系是:A.
分压差小则扩散快
B.
与各气体分子量的平方根成正比
C.
与扩散面积成反比
D.
与扩散距离成反比
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皮皮学刷刷变学霸
举一反三
【单选题】汉译英：“外贸、合同、发票”( )。
A.
business; invoice; contract
B.
foreign; trade contract; invoice
C.
business; L/C; contract
D.
foreign trade; invoice;contract;
【单选题】There will be a ______ of theater productions playing at the Maddon Concert Hall this spring.
A.
news
B.
ceremony
C.
series
D.
venue
【单选题】What is true about Carlson Furniture?
A.
It is a family-owned business.
B.
It has been in business for 45 years.
C.
It is the largest furniture dealer in Chicago.
D.
It has recently been bought by another company.
【简答题】A website following B2B business model sells its product directly to a customer.()
【简答题】B2B business to business
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