Emulsion oils and sodium nitrite are both approved

职业技能鉴定 已帮助: 时间:2024-06-14 17:30:07

Emulsion oils and sodium nitrite are both approved additives, but the latter cannot be used if any pipes are or if ally soldered joints exit.
A.chromed
B.welded
C.galvanized
D.bolted
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标签:正确答案,请帮忙,but

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