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【判断题】
蓄电池每两个月至少应充电一次。( )A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】An American company has started testing a new program aimed at increasing security. Three workers from CityWatcher.com, a company that provides security camera equipment, have volunteered to be electr...
A.
the test of a new security program
B.
the increasing security of U.S. companies
C.
a new central monitoring system
D.
Global Positioning Satellite technology
【判断题】Daimler Chrysler is an American company while the Toyata is a Japanese company.
A.
正确
B.
错误
【简答题】It is an American company devoted to the development of computer software.
【简答题】胆固醇在内分泌腺体中可转变为_____________,在肝脏中可转变为__________________,在皮肤先转变为7-脱氢胆固醇,再经紫外线照射可转变为______________。随胆汁进入肠道中的胆固醇则可被细菌作用转变为_____________与粪便一起排出体外。
【单选题】Which one of following is not an American company?( )
A.
Google
B.
CocaCola
C.
Facebook
D.
Airbus
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