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【单选题】Passage Two:Questions 26 to 30 are based on the following passage.If you want to stay young, sit down and have a good think. This is the research finding of a team of Japanese doctors, who say that mo...
A.
why certain people age sooner than others
B.
how to make people live longer
C.
the size of certain people’s brains
D.
which people are most intelligent
【单选题】关于非独立采暖通风装置，以下哪种说法不正确( )。
A.
采暖通风装置的鼓风机不受发动机转速的影响
B.
采暖通风装置的鼓风机可当作风扇进行室内通风
C.
当把风扇开关拉到“Ⅱ”档位置时，鼓风机上加的电压为蓄电池电压
D.
当把风扇开关拉到“Ⅰ”档位置时，鼓风机上加的电压为发电机的输出电压