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【多选题】
理论上判断某个产品是否属于医疗器械范畴,除了必须明确作用于人体外,特别需要注意以下要点:_____A.
是否符合定义所规定的4个预期用途之一。
B.
是否有理论依据，支持达到预期的效果。
C.
是否有临床验证。
D.
是否有药物或代谢或免疫在起主要作用。
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举一反三
【简答题】By the time we reach 70 years old, that's about _____breaths.
【单选题】By the time we reach an agreement, the approvals ____.
A.
will be got
B.
have been got
C.
shall have been got
D.
are got
【单选题】At first we thought we could reach our _____ on time, but we have been delayed by the traffic jam.
A.
published
B.
destination
C.
devote
D.
distinguishes
【单选题】Don't worry! We still have five minutes to reach the beach . [ ]
A.
by the time
B.
in time
C.
on time
【单选题】By the time we reach an agreement, the approvals ____.
A.
will be got
B.
have been got
C.
are got
D.
shall have been got
【单选题】By the time we reach Shanghai, we______nearly two thousand miles.
A.
shall have traveled
B.
travel
C.
have traveled
D.
are traveling
【单选题】与Dear Sirs,匹配的结尾敬语是( )
A.
yours Faithfully,
B.
Yours faithfully,
C.
Sincerely yours,
D.
Best wishes,
【单选题】By the time we reach that page, we ___________ twenty lessons of the book.
A.
will study
B.
will have studied
C.
would study
D.
have studied
【简答题】—Were you late for the film? —Very late. Half of it ________ (show)by the time we ________ (reach)the cinema.
【单选题】To make the goods reach you ( ) time we sent them by rail to Liverpool three days ahead of schedule.
A.
in
B.
for
C.
wihout
D.
on
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