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【单选题】
下列关于脂肪酸 β- 氧化作用的叙述哪个是错误的 ?
A.
脂肪酸仅需一次活化
B.
除硫激酶外 , 其余所有的酶都属于线粒体酶
C.
β- 氧化包括脱氢 , 水化 , 再脱氢和硫解等重复步骤
D.
这过程涉及到 NADP + 还原
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【单选题】Guangzhou is becoming more and more beautiful, we are really proud ______ it.
A.
of
B.
in
C.
to
D.
at
【单选题】The phrase 'going to the dogs'(paragraph 3)most probably means
A.
becoming worse.
B.
becoming lazier.
C.
becoming crazier.
D.
becoming easier.
【单选题】As we all know, the number of Tibetan antelopes(藏羚羊) ________ becoming ___________.
A.
is; less and less
B.
are; less and less
C.
is; smaller and smaller
D.
are; smaller and smaller
【单选题】色斑皮肤在选择护肤品是应注意其能否阻碍黑色素细胞的分泌及()两个方面。
A.
阻碍自由基增加
B.
阻碍色斑形成
C.
减少自由基
D.
减少皮脂腺分泌
【单选题】在“新建CSS规则”对话框中,若要定义一个名为word的类样式,则选择器名称应该定义为________。 ( )
A.
word
B.
.word
C.
#word
D.
<word>
【单选题】— The number of pandas is getting________ because their living areas are becoming polluted. — So we must do something to protect them.
A.
less and less
B.
larger and larger
C.
smaller and smaller
D.
fewer and fewer
【单选题】The environment is becoming worse and worse. We must stop the pollution __________ longer. [      ]
A.
to live
B.
from living
C.
living
D.
live
【单选题】We can infer from the passage that _________________.
A.
America is becoming a warlike country
B.
the American role in the world is no longer proper
C.
America will become the most powerful again if it starts to learn foreign customs
D.
America shouldn't remain blind and ignorant with respect to other nations' cultures
【单选题】FDM 是按照( )的差别来分割信号的。
A.
频率参量
B.
时间参量
C.
码型结构
D.
A、B、C均不是
【单选题】FDM是按照()的差别来分割信号的。
A.
频率参量
B.
时间参量
C.
码型结构
D.
均不是
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