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【单选题】
接种卡介苗可以有效预防结核病,其作用机理是( )A.
卡介苗能激活人体的吞噬细胞,将结核杆菌吞噬
B.
卡介苗能使人在不发病的情况下，产生抵抗结核杆菌的抗体
C.
卡介苗能促进人体的各项生理活动，增强抵抗力
D.
卡介苗进入人体后能直接消灭侵入人体内的结核杆菌
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【多选题】Which of the following inventions are the inventions during the UK’ Industrial Revolution?
A.
Jenny Spinning Machine
B.
Steam Engine
C.
Phonograph
D.
Lithography
【单选题】采购中的80/20法则是指( )
A.
约20%的采购项目是采购的必需品
B.
约20%的项目占用采购总支出的80%以上
C.
约20%的项目可能占用采购总支出的80%,而剩余80%的采购项目可能仅占总支出的20%
D.
采购中有80%的必要物品和20%的次要物品
【简答题】Both television and home video are(compare) ______ recent inventions．
【单选题】Many of the inventions that made people ______ and have determined the direction of American industry were related to agriculture and food production.
A.
abundant
B.
affluent
C.
sufficient
D.
pleasant
【单选题】The number of the inventions of this year is much more than ______ of last year.
A.
the ones
B.
those
C.
that
D.
the inventions
【简答题】Americans fully realized what Edison’inventions meant when they__________．__________
【单选题】' By exchanging limited exclusive rights for ( ) of inventions and creative works, society and the patentee/copyright owner mutually benefit, and an incentive is created for inventors and authors to c...
A.
disclosure
B.
trademark
C.
shareholders
D.
recovery
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