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【简答题】
火车连续发出两声长鸣,这表示?
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举一反三
【多选题】二级防护标准为()。
A.
全身
B.
内置式重型防化服
C.
全棉防静电内外衣
D.
封闭式防化服
E.
正压式空气呼吸器或全防型滤毒罐
【单选题】—Let' s go shopping,shall we? —_________
A.
Good idea.
B.
I would love to.
C.
I m busy now.
D.
No.l can't.
【单选题】Which of the following statements is correct about the family’s response to Paul’s mockery?
A.
. Only the parents found it entertaining.
B.
Every member except Marriam was amused
C.
The brothers found it hard to appreciate.
D.
. Mariam also thought it was amusing
【单选题】pH =5.28的某溶液,[H+]为5.2480746×10-6 mol•L-1,其结果有效数字位数正确的是:( )
A.
5.2480746×10-6mol•L-1
B.
5.248×10-6 mol•L-1
C.
5.25×10-6mol•L-1
D.
5.2×10-6mol•L-1
【单选题】真核生物细胞内存在着各类繁多、长度为21-23个核苷酸的小分子RNA(简称miR),它们能与相关基因转录出来的RNA互补,形成局部双链。由此可以推断这些miR抑制基因表达的分子机制是()
A.
阻断rRNA装配成核糖体
B.
妨碍双链DNA分子的解旋
C.
干扰tRNA识别密码子
D.
影响RNA分子的远距离转运
【多选题】以下哪些色光源属于短波段?
A.
B.
C.
D.
绿
【单选题】John goes after what he wants () life.
A.
in
B.
with
C.
where
D.
who
【单选题】What kind of reference word is used in the fourth sentence to help connect the sentences together?
A.
Personal pronoun.
B.
Possessive pronoun.
C.
Demonstrative.
D.
Comparative.
【多选题】建筑工程图中,详图的比例常采用()、1:25、1:30。
A.
1:5
B.
1:10
C.
1:20
D.
1:35
E.
1:45
【单选题】The International Women ’ s Day acts as an occasion for____________.
A.
improving women's edge over their male counterparts
B.
demanding better working conditions for women
C.
promoting Women's leadership in politics and business
D.
memorizing remarkable global women ’ s movement
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