自动空气开关是具有（）的双重电器。
参考答案：控制和保护功能
27. As five children under 10 got drowned in a southern province, it is not socially _____ for
parents to leave children unattended at that age.
A．acceptable
B．affordable
C．sustainable
D．believable
犯罪社会学的研究内容
