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【判断题】
理想流量特性是在阀前后压差为一定情况下的流量特性,它取决于阀芯的形状A.
正确
B.
错误
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】To attract foreign investors, you have to _____them that their investment will have profitable returns.
A.
confirm
B.
stimulate
C.
grab
D.
convince
【单选题】-- Does Jimmy always go to school by bus? - No, rather than __________ on a crowded bus, he always prefers __________ a bike.
A.
ride, ride
B.
ride, to ride
C.
to ride, riding
D.
riding, ride
【简答题】阅读理解。 Many people have discovered that hobbies can be profitable as well as fun. Some people have such fine collections of bottles, flags, buttons or shells that others are willing to pay to see them ...
【简答题】Does Jimmy always go to school by bus?No, rather than __________ on a crowded bus, he always prefers __________ a bike.A. ride, ride B. riding, ride C. ride, to ride D. to ride, riding
【单选题】To attract foreign investors, you have to ______ them that their investment will have profitable returns.
A.
confirm
B.
convince
C.
grab
D.
stimulate
【简答题】细胞学说的内容?
【简答题】细胞学说的内容之一指出：一切生物都是由细胞构成的，正确吗？
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