What is the writer’s attitude toward Wilkins, Watson and Crick?
A. Disapproving
B. Respectful.
C. Admiring
D. Doubtful

空调系统中的定风量系统是通过改变送风状态而风量不变来适应室内负荷的变化．其特点包括（）

A．室内气流分布稳定
B．系统简单
C．制造复杂
D．系统能耗大

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If you want to have someone wake you up in the morning, you may call.A.800-5224B.800-5770C.800-7839 D.800-0760

A.
A.800-5224B.800-5770C.800-7839
B.800-0760

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