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【单选题】
质量等级及脱氧方法分为若干牌号,随牌号提高,钢材( )。A.
强度提高，伸长率提高
B.
强度降低，伸长率降低
C.
强度提高，伸长率降低
D.
强度降低，伸长率提高
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反馈参考答案：
举一反三
【单选题】The rest of the money I got from my parents last week _______still in my pocket.
A.
is
B.
are
C.
was
D.
were
【单选题】人过度通气后可发生呼吸暂停,其主要原因是
A.
呼吸肌过度疲劳
B.
血中 O 2 分压升高
C.
血中 CO 2 分压降
D.
血中 pH 过低
E.
血中 CO 2 分压升高
【单选题】The rest of money I get from my parents _______still in my pocket last week.
A.
is
B.
are
C.
was
D.
were
【单选题】I saved as much as I could and my mom _________ the rest of the money.
A.
made up
B.
thought out
C.
set off
D.
settle down
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