皮皮学,免费搜题
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【单选题】
黄瓜的茎属于( )
A.
直立茎
B.
攀缘茎
C.
平卧茎
D.
匍匐茎
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皮皮学刷刷变学霸
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】177道德在调整人们行为时的评价时的评价标准是( )。
A.
善恶
B.
四项基本原则
C.
宪法
D.
无产阶级专政
【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
【判断题】水蒸气蒸馏是利用样品的不同组分在两种不相混溶的溶剂中的溶解度不同,来达到分离或纯化。
A.
正确
B.
错误
【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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