问题
单项选择题
气体灭火系统选择阀上应设置标明防护区或保护对象名称或编号的（）标志牌。
A、防护标记
B、临时性标签
C、警戒标记
D、永久性标志
答案
参考答案：D
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气体灭火系统选择阀上应设置标明防护区或保护对象名称或编号的（）标志牌。
A、防护标记
B、临时性标签
C、警戒标记
D、永久性标志
参考答案：D
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| There are no class this afternoon. We have a party for 1 Day. At about two o'clock in the afternoon, the party 2 . Li Dong and Li Qing host (主持) the party. They talk 3 the school life of the Young Pioneers. The students' parents also speak at the party. They tell us 4 harder. Then they 5 us a lot of presents. At last, the teachers, the students and the parents sit 6 a table with a 7 and some oranges on it. We sing and 8 . 9 had a good time. What a great party! We will 10 forget the party. | ||||
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