动荷加载的方式有：重物加载、惯性力加载、激振器加载、爆炸加载、液压加载。
参考答案：错
缺铁性贫血临床分期可分为_____、_______缺铁性贫血。
It snowed heavily for three days and they were separated from the outside world.
A．in the end
B．on end
C．by the end
D．at the end
