在钢铁炉前快速分析中，多以直读光谱仪在高纯氩气的保护下进行激发分析。但这时在电极和透镜之间还要通以纯氩，以便（）。
参考答案：减少紫外光谱线光能的损失
眶上裂综合征累及的神经有
A．视神经
B．动眼神经
C．滑车神经
D．三叉神经
E．外展神经
On the night of February 14th, 2011, all the Chinese _________ by Guo Mingyi, a very common worker who ________ more than 180 poor children since 1994.
A．are moved, helps
B．moved, helped
C．were moved, has helped
D．moved, have been helped
