下列( )流水施工形式不属于流水施工。
A．等节奏B．无节奏C．异节奏D．有节奏
参考答案：D
I'm amazed to hear from my school teacher again.________, it is ten years since we met last.[ ]
A. In a word
B. What's more
C. That's to say
D. Believe it or not
电力负荷的含义是什么？电力负荷按重要性分哪几级？各级电力负荷对供电电源有什么要求？
