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单选题
11、如果在密闭空间使用溶剂,请确保工作区域有良好的空气流通。
A
lf you use solvent in a closed space, make sure that there is good airflow in the work area.
B
When using composite in confined space, make sure it has good ventilation.
C
You can not use sealant in enclosed space on condition that there is no good ventilation.
答案解析
正确答案：A
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