参考答案:C
答案解析:[注释] 本题的关键是要经过一个简单的运算,将所有找工作的人数相加,就可以得到正确答案。
The purpose of treating the cooling water of the diesel engine is to()
Ⅰ. resist the scale formation in the cooling chamber
Ⅱ.lubricate the engine part
Ⅲ.increase thermal capacity
Ⅳ.resist corrosion
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