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【单选题】
排烟风机一般可采用离心风机、排烟专用的混流风机或轴流风机,也有采用风机箱或屋顶式风机,排烟风机应保证在280℃的环境条件下能连续工作不少于( )min。A.
10
B.
20
C.
30
D.
40
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【判断题】All immigrants want to assimilate to the U.S. culture completely; they have no desire to maintain their own culture
A.
正确
B.
错误
【单选题】Police officers have a big responsibility. They have to keep the city and its people safe.
A.
a free-time activity
B.
an important job to do
【简答题】阅读理解 Dog Translation Products Coming to U. S. A Japanese toy maker declares that they have developed a gadget that translates dog barks into human language and plans to begin selling the gadget--under...
【简答题】阅读理解。 Dog Translation Products Coming to U. S. A Japanese toy maker declares that they have developed a gadget that translates dog barks into human language and plans to begin selling the gadget--unde...
【单选题】Mr. White will fly to Los Angeles, which gate should he get on board?
A.
B45
B.
A12
C.
A34
【简答题】— Is this Mr. White’s office,Mary? — Yes, _____. A.that’s all right B. it doesn’tmatter C. afteryou D. please yourself
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