矮型信号机距站线线路中心的最小距离为()。
A.1875mm
B.2150mm
C.800mm
D.1200mm
参考答案:A
Nowadays everyone hopes to ______ good education so as to get a good job in the future.
A.accept
B.accept a
C.receive
D.receive a
煤气中毒,典型皮肤表现是().
A、皮肤呈蓝色
B、皮肤呈棕色
C、皮肤呈樱桃红色
D、皮肤呈苍白
E、皮肤发黑