一般区间道口应设自动通知信号,临近车站的区间道口设半自动通知信号,站内道口必须设置手动信号。()
参考答案:错
Even if the treatment _____, there is still no magic pill for patients in the late stages of AIDS. [ ]
A. does
B. uses
C. works
D. helps
依法属于国家所有的自然资源,所有权可以不登记。
A、正确
B、错误