第26题: [单项选择]以下不常被用作屏蔽防护的器械有() A. 滤过板 B. 铅屏 C. 铅橡皮手套 D. 壁纸 E. 铅眼镜 参考答案:D 答案解析:壁纸不能达到防护作用。
第27题: [单项选择]Where is the man A. Because he wanted to arrive at Turner’s Street on time. B. Because he didn’t know where the bus stop was. C. Because he didn’t know how to get to Turner’s Street. 参考答案:C