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【多选题】
下列关于土压力说法中,()包含有不正确的内容A.
当墙背与土体间摩擦角增加时，主动土压力下降，被动土压力也下降
B.
当填土重度增加时，主动土压力增加，被动土压力下降
C.
内摩擦角增加时，主动土压力增加，被动土压力减小
D.
当黏聚力增加时，主动土压力减小，被动土压力增加
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举一反三
【简答题】Listen and choose thecorrect answer for each question.
【多选题】Thecorrect descriptions about the metabolic characteristics of skeletal muscles are
A.
s ynthesis and storage of muscle glycogen
B.
s ynthesis and storage of phosphocreatine
C.
R ed muscles consume less energy , while white muscles consume more energy .
D.
During vigorous exercise, glycolysis becomes domina nt.
E.
Fatty acid oxidation is usually the main way of energy supply .
【单选题】The singer _____ frustrated when she wasn't sure of thecorrect answer. [ ]
A.
may be
B.
used to
C.
used to be
D.
use to be
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