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【单选题】
The amino acid pool allows for constant substrates to be available for numerous bodily uses. Which statement below best describes this amino acid pool?A.
Approximately 80% of the body ’ s total protein is in the amino acid pool.
B.
Dietary proteins constitute most of the amino acid pool.
C.
The concentration of free amino acids is as rigidly controlled as blood glucose levels.
D.
The synthesis of new protein is the major use of amino acids in the amino acid pool.
E.
Changes in the rate of protein synthesis and degradation occur within seconds to minutes.
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举一反三
【单选题】混凝土在长期荷载作用下,变形会随着时间不断增长,即荷载不变,而变形随时间延长不断增长, 这种现象称为( )。
A.
老化变形
B.
蠕变变形
C.
徐变变形
D.
收缩变形
【简答题】混凝土在长期荷载作用下, 不变, 随时间增长的现象称为徐变。