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【单选题】
按GB 7588-2003《电梯制造与安装安全规范》规定，在装有多台电梯的，不同电梯的运动部件之间应设置隔障，这种隔障应至少从轿厢、对重(或平衡重)行程的最低点延伸到最低层站楼面以上（）高度。A.
1.5m
B.
2.5m
C.
3.5m
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举一反三
【单选题】The economic impact study was conducted by a group of _______ selected MBA students at the University of Kansas．
A.
especially
B.
specially
C.
regularly
D.
potentially
【单选题】听力原文： Recently a five-year study was conducted by the Center for Childhood Development in Los Angeles, California, regarding the way babies react to different types of people. The findings of the stud...
A.
When they are with a baby-sitter.
B.
When they are with another baby.
C.
When they are with a strange adult.
D.
When they are with an elderly person.
【简答题】The study is a genome-wide ysis conducted ___ [A] for [B] with [C] on [D] by 本题为单选题，请选出正确答案，谢谢！
【单选题】The employee health study on PFOA conducted by DuPont revealed______.
A.
a certain degree of relation between exposure to PFOA and health
B.
possible damage done by PFOA exposure to health
C.
close ties between exposure to PFOA and health
D.
most of the health parameters are unaffected by PFOA exposure
【单选题】The study was conducted on a local scale and was independent ______ the central government.
A.
on
B.
against
C.
from
D.
of
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【简答题】The study is a genome-wide ysis conducted ___ [A] for [B] with [C] on [D] by 本题为单选题，请选出正确答案，谢谢！
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