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 corrosionA.I +IIB.II + IIIC.III + IVD.I +IV
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问答题YYZZZYZZY is to 221112112 as YYZZYZZY is to____.
问答题问答题:在实施《指南》中我们教师应把握哪些问题?