热成像仪的特点有:()。
A.隐蔽性好
B.能发现伪装
C.受天侯影响小
D.观察距离较远
参考答案:A, B, C, D
Classes were over. The students stopped __________. [ ]
A. have a rest
B. had a rest
C. having a rest
D. to have a rest
WAP方式开通信息管家:用手机登录“移动梦网”-“MO!火火火”-“信息管家”-()。