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【多选题】
我国核战略的特点是 ( ) 和有效性。A.
防御性
B.
威慑性
C.
报复性
D.
有限性
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举一反三
【单选题】I had tried my best to stop that wrong doing, but my advice had no________on his actions. [ ]
A.
impression
B.
advantage
C.
progress
D.
influence
【简答题】简述全面质量管理的核心和工作方法。
【单选题】I tried to make the baby _____ by singing and jumping like a monkey. [ ]
A.
to stop to cry
B.
to stop crying
C.
stop to cry
D.
stop crying
【单选题】常见的齿轮材料20CrMnTi（含碳量0.2%；硬度低。齿轮最终性能要求有表硬里韧）的最终热处理工艺应该是（ ）
A.
调质
B.
淬火+低温回火
C.
渗碳
D.
渗碳后淬火+低温回火
【单选题】I tried to stop several times but in vain.
A.
to smoke
B.
smoking
C.
to smoking
D.
about smoking
【单选题】I tried to stop her from _____ her unhappiness at home.
A.
to think about
B.
thinking about
C.
thought about
【单选题】月经是由于血液中:
A.
酮含量下降，引起子宫内膜功能层脱落
B.
雌激素和孕激素含量骤降，引起子宫内膜全层脱落
C.
雌激素和孕激素含量骤降，引起子宫内膜功能层脱落
D.
促性腺激素含量降低，引起子宫内膜功能层脱落
E.
雌、孕激素降低引起阴道上皮脱落
【单选题】-Lily failed again． -I tried to stop her several times,but she listen. [ ]
A.
couldn't
B.
shouldn't
C.
mustn't
D.
wouldn't
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