单项选择题

VPSAH2单元采用先进成熟的控制软件包可自动实现吸附时间的优化和吸附压力自适应调节，保证产品的合格和收率的最高（）

A.是
B．否

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单项选择题

From this unit, we can infer that _____________.

A、the Terracotta Army was dug out by villagers in Xianyang
B、the archaeologists discovered the Terracotta Army by chance
C、the warriors and horses were made of Pottery
D、the Terracotta Army was designed by the First Emperor