与自由基聚合相比较,试说明离子聚合反应在引发剂种类、单体结构的特征和溶液剂性质等三方

---Why did Tom become wealthy this year?

---Because he sold _________________ he did last year.

A．four times as many furnitures as

B．four times as furnitures many as

C．four times furniture as much as

D．four times as much furniture as

在调车信号组合里KJ自闭电路中XJJ第6组前接点的作用是什么？

患儿，8岁。发热2天，左侧腮部肿胀、疼痛，边缘不清，触之痛甚，咀嚼不便。伴头痛，咽痛，纳少，舌红苔薄黄，脉浮数。其治法是（）

A.清热解毒，软坚散结

B.疏风清热，散结消肿

C.疏肝理气，软坚散结

D.清肝泻火，活血镇痛

E.滋阴降火，活血消肿

( )是指在一定时间、一定地点或范围内，影响和制约项目投资活动的各种外部境况和条件要素的有机集合体。

A．投资意向

B．投资规模

C．投资环境

D．投资背景

ISM规则具有相对的独立性，它将由政府和国际海事组织强制实施；由船旗国政府或授权机构进行审核。( )