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【多选题】
影响心音强度改变的因素有（）。A.
心室充盈情况与瓣膜位置
B.
瓣膜完整性与活动性
C.
心窒收缩力与收缩速率
D.
胸壁厚度
E.
肺含气量
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举一反三
【单选题】A good many proposals were raised by the delegates, ________ was to be expecte (2003.1/42)
A.
that
B.
what
C.
so
D.
as
【简答题】to limit all or most of your study ,business etc to a particular subject or activity
【简答题】The main principles of GATT 19 47 were as follows: (1) Trade 1 was forbidden . Each contracting state had to 2 the same trading privileges and benefits (or most- 3 -nation status) to all other contrac...
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