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【单选题】
锅炉的上排污漏斗应不低于（）A.
最低工作水位
B.
最低危险水位
C.
最低工作水位以上25mm
D.
最低危险水位以上25mm
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【单选题】The Sumerians invented the writing system known as ________ .
A.
Coptic
B.
hieroglyphic
C.
script
D.
cuneiform
【单选题】Which of the following can be inferred from the passage concerning the Sumerians?
A.
They were descendants of the Persians.
B.
They were the first people to cultivate the valley of the Tigris.
C.
They were accomplished musicians.
D.
They had the beginnings of an economy.
【简答题】骶结节韧带和骶棘韧带与坐骨大、小切迹共同围成____和____。
【单选题】与坐骨大小切迹共同围成坐骨大孔、坐骨小孔的韧带为
A.
骶结节韧带与骶棘韧带
B.
骶结节韧带与耻骨上韧带
C.
耻骨弓状韧带与耻骨上韧带
D.
骶棘韧带与耻骨上韧带
E.
骶棘韧带与耻骨弓状韧带
【单选题】The great achievements of Sumerians in astronomy .
A.
inventing duodecimal number system
B.
making mummy
C.
finding five planets
D.
enacting code
【单选题】According to the passage, by the year 3000 B.C. the Sumerians had already done all of the following EXCEPT:
A.
They had abandoned the area north of the Persian Gulf.
B.
They had established themselves in cities.
C.
They had started to communicate through
D.
They had created bronze tools and weapons.
【单选题】According to the passage, which of the following statement is right for the ancient Sumerians?
A.
The ancient Sumerians built the present-day lraq.
B.
The ancient Sumerians started agriculture when they produced rice.
C.
The ancient Sumerians began fermenting beer from barley at least 6,000 years ago.
D.
The ancient Sumerians began fermenting beer from barley at least 600 years ago.
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