简述本书在创新性方面的探索体现在哪些方面？

A. 正确
B. 错误

A. 正确
B. 错误

A. they generate heat
B. they emit hydrogen
C. of the toxic fumes they emit
D. they recharge faster in a well ventilated space

A. 买入股票
B. 买入基金
C. 买入权证
D. 买入债券