为什么说高温气冷核电反应堆不可能出现核泄漏？
年营业现金净流量等于（） ["应税利润总额×（1—所得税率）","年税后净利润+年折旧额+年摊销额","营业收入—非付现成本—所得税","例如总额+折旧"]
唐代时期，长安城内的“胡化”现象表现为（） ["吃胡食","穿胡服","奏胡乐","跳胡旋舞"]
（） unit is mounted so as to raise and lower the cable from the spurling pipe, which is at the top and center of the chain or cable locker. ["The cable lifter","The hoisting motor","The topping wire","The life-raft"]
S曲线图的横坐标和纵坐标分别是指什么？
高温气冷核电反应堆按照堆芯燃料结构形式可分为哪2种？
