题目内容

The interactive nature of exhibitions ,by which visitors may not onlyget new ideas, but talk them through eith experts online, is much apppreciated.

A. 对
B. 错

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Many attendees cancel important puechases in anticipation of an exhibition.

A. 对
B. 错

Exhibitions help praticipating companies to accomplish non-promotional marketingobjectives, because exhibitions increase brand expoure.

A. 对
B. 错

竖井和横通道是暗挖隧道和的临时通道，也是送气通风口和水、电的输入口。

在长隧道施工时，为了缩短工期，要增设、以增加工作面。