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【单选题】
按照《中华人民共和国招标投标法》的规定，依法必须进行招标的项目，自招标文件开始发出之日起至投标人提交投标文件截止之日止，最短不得少于()日。A.
10
B.
15
C.
20
D.
30
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反馈参考答案：
举一反三
【单选题】The author's mother prepared the following food EXCEPT:
A.
roasted chickens
B.
brown bread
C.
mayonnaise
D.
rock-cakes
【单选题】关于 Haversian system 的叙述,哪项的错误的 ?
A.
由同心圆排列的骨板围成
B.
哈弗管内有血管和神经
C.
骨小管穿越骨板相互连接相通
D.
骨小管内有毛细血管
【单选题】关于Haversian system的叙述,哪项的错误的? ( )
A.
由同心圆排列的骨板围成
B.
哈弗管内有血管和神经
C.
骨小管穿越骨板相互连接相通
D.
哈弗骨板之间有骨细胞
E.
骨小管内有毛细血管
【单选题】Which of the following statements is TRUE?
A.
The author's mother died when he was only ten years old.
B.
The author's father died when he was six years old.
C.
The author and his family moved to Indiana in his eighth year.
D.
His grandfather was killed by Indians in a battl
【单选题】According to the passage, what's the character of the author's mother?
A.
Gentle.
B.
Reserved.
C.
Hot-tempered.
D.
Restless.
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