信号机按类型分为色灯信号机、臂板信号机和机车信号机。
参考答案：对
A team, ________two doctors and three policemen ,was sent to search for the lost explorers. [ ]
A. consisting of
B. consists of
C. consisted of
D. to be consisted of
下列哪项不是紫癜风热伤络型症状？（）
A.紫癜反复发作
B.关节肿痛，尿血
C.颜色较鲜明
D.小腿及臀部较多
E.腹痛剧烈
rs. [ ]