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【单选题】
以下( )不是克令吊的保安装置A.
限位装置
B.
吊臂角度限位
C.
旋转手柄限位
D.
紧急按钮
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皮皮学刷刷变学霸
举一反三
【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.
【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】The ancient Sumerians began fermenting beer from barley at least 6,000 years ago.
A.
Y
B.
N
C.
NG
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