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【单选题】
将所有装有不同金属螺套或有较深盲孔的金属零件在烤箱中干燥至少一小时，烤箱温度为225到 275华氏度(107to135C).
A.
Dry all metal parts that have different metal inserts or deep blind holes in an oven at 225 to 275F(107 to135C) for a minimum of one hour.
B.
Put all different metal inserts or deep blind holes metal parts in an oven at 225 to 275F(1070to 135C) for a maximum of one hour.
C.
All metal parts that have different metal inserts or deep blind holes are dry in an oven of 225 to 275F(107 to 135 C) for a minimum of one hour.
参考答案：
参考解析：
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