在插拔插头时人体不得接触导电极,可以对电源线施加拉力。()
A. 正确
B. 错误
It can be concluded from Dr Dubos' remarks that____.
A. people find invisible diseases difficult to deal with.
B. attacks by hidden enemies tend to be fatal.
C. diseases with obvious signs are easy to cure.
D. people tend to overlook hidden dangers caused by pesticides.
分期建设、分期投入生产或者使用的建设项目,其相应的环境保护设施应当分期验收。()
A. 正确
B. 错误
供水、供电、供气、公安消防等部门或者单位不得明示或者暗示建设单位、施工单位购买其指定的生产供应单位的建筑材料、建筑构配件和设备。()
A. 正确
B. 错误