问题
单项选择题
平巷运输信号中电笛或口笛:二长声表示()。
A.停车
B.向前行
C.向后行
D.向前慢行
答案
参考答案:B
平巷运输信号中电笛或口笛:二长声表示()。
A.停车
B.向前行
C.向后行
D.向前慢行
参考答案:B
Peter King, 15 and Mary King, 13 went to see a doctor together. Peter had a bad cold, so the doctor gave him some pills to take. Mary had a bad cough, so the doctor |gave her some cough medicine. These are the words on the bottle of medicine:
|