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举一反三
【简答题】必需氨基酸和非必需氨基酸(essential and non-essential amino acids)
【简答题】It is essential that these application forms ?It is essential that these application forms ______ back as early as possible. A) must be sent B) wi ll be sent C) are sent D) be sent
【单选题】To drive a car safely, it is ________ good brakes.
A.
essential with
B.
essential having
C.
essential to have
D.
essential have
【简答题】必需基团(essential residues)
【单选题】Which of the following would most likely not be an essential objective of a project team kick-off meeting
A.
. Create a project technology plan
B.
. Get team members to know one another
C.
. Identify project problem areas
D.
. Obtain individual and group commitments
E.
. Identify the project coordinator
【简答题】essential element
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