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【单选题】
下面关于铅垂线的叙述正确的是()。A.
铅垂线总是垂直于大地水准面
B.
铅垂线总是指向地球中,
C.
铅垂线总是指向地球中
D.
D铅垂线就是椭球的法线
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【判断题】Companies that feel greater uncertainty because of intense global competition may centralize authority.
A.
正确
B.
错误
【单选题】The author seems to feel that most companies______.
A.
will be on computers within five years.
B.
lose money whenever the computers go down.
C.
have trouble making the conversion to computers.
D.
do not save money by using the computer.
【单选题】The author seems to feel that most companies ______.
A.
will be on computers within five years
B.
lose money whenever the computers go down
C.
have trouble making the Conversion to computers
D.
do not save money by using the computer
【简答题】插秧机的供秧机构必须完成[填空(1)] 。
【判断题】Companies that feel greater uncertainty because of intense global competition may centralize authority.
A.
正确
B.
错误
【单选题】It can be inferred from Paragraph Nine that______.
A.
Insurance companies feel more interested in heath apps than advertisers
B.
It is suggested that users have to bear full responsibility for their own data
C.
It is likely that personal data can be shared with insurance companies
D.
It is illegal to share the users' personal information with insurance companies
【简答题】42CrMo钢经过调质和表面淬火后,表层组织为( ),心部组织为( )。
【简答题】So, some companies who feel that ___________________, or they need to build a team, send their workers to ______________________ .
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