【单选题】As urban populations exported finished goods in ________ for raw materials from neighboring populations, organized trade grew substantially.
【单选题】在下列各句横线处,依次填入最恰当的词语。( ) ①总理一直很忙,这次到国外只进行了 ______的访问。 ②在办公室里,这两件东西摆放在一起很不 ______。 ③他______不决地伫立着,缓缓环顾四周的房屋和院中的景物。
【判断题】变电一次接线图中间隔及设备图元的排列位置应与现场一致,各设备间的连接应按实际连接用导线相连,但站用变部分接线如果在图形中不方便摆放,可不与站用变相连而单独绘制在空白处,并在进线处进行标注。
【单选题】As urban populations exported finished goods __________ raw material from neighboring populations, organized trade grew substantially.