接触电压和接触电压触电是以站立在离漏电电流设备（）m的人.
A.0.8m
B.1m
C.1.5m
参考答案：A
() people went to the concert which was held in People's Square () the night of May Day.
A. Thousands of; in
B. Thousand; on
C. Many thousand; in
D. Thousands of; on
哺乳期禁用的药物包括
A．抗恶性肿瘤药
B．维生素类
C．抗甲状腺药
D．喹诺酮类
E．青霉素
