问题
单项选择题
Your fireman’s outfit includes a(n)（）.
A.chemical protection face shield
B.approved work vest
C.self-contained breathing apparatus
D.marlinspike
答案
参考答案：C
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Your fireman’s outfit includes a(n)（）.
A.chemical protection face shield
B.approved work vest
C.self-contained breathing apparatus
D.marlinspike
参考答案：C