架线式电机车在行驶中，往往产生大量电弧火花。请问这些电弧火花会导致什么事故？
参考答案：
瓦斯煤尘爆炸事故、火灾事故。
Although English may not lead directly to a great career, it will certainly give you _______ to a wider range of opportunity.
A．ambition
B．achievement
C．account
D．access
“在鸟之手”理论的观点认为公司分配的股利越多，公司的市场价值越大。 ( )
