避雷网的安装方法有( )。
A．沿混凝土块敷设
B．沿支架敷设
C．沿柱卡设
D．桥架敷设
参考答案：A,B
观察《对外开放示意图（局部）》，我国最早设置经济特区的省份是
A．①②
B．②③
C．①③
D．③④
"" in "57 million" and "141 million" probably stands for().
A．English
B．the euro
C．European
D．European Currency Unit
" in "57 million" and "
141 million" probably stands for().