安装局部通风机必须符合()、()、(),确保用风地点连续供风。
A、双风机
B、双电源
C、自动切换
D、自行启动
参考答案:A, B, C
China has been pushing the reform of public hospitals ______ all its citizens.
A.in charge of
B.for the purpose of
C.in honor of
D.for the benefit of
视诱发电位可以客观地记录闪光刺激对视网膜的诱发电位。