碱化度ESP（Exchangeable sodium percentage）

[名词解释] 碱化度

[单选题]Emulsion oils and sodium nitrite are both approved additives, but （） cannot be used if any pipes are galvanized or if soldered joints exist.A . the latterB . latterC . formerD . the former

[单选题]E．mulsion 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．chromedB．weldedC．galvanizedD．bolted

[判断题] 碱化度是聚合铝的一个重要指标.碱化度在30%以下时,混凝效果较好。A . 正确B . 错误

[判断题] 碱化度是聚合铝的一个重要指标。碱化度在30%以下时,混凝效果较好。A . 正确B . 错误

[判断题] 碱化度是聚合铝的一个重要指标。碱化度在30%以下时，混凝效果较好。A . 正确B . 错误

[名词解释] 钠热阱 sodium hot trap

[名词解释] 钠冷阱 sodium cold trap

[单选题]EXIF信息（Exchangeable Image File），它是记录在（）中的一组参数。A . 图像B . 场景描述C . 数码照片D . 主题

[单选题]A． small percentage of the grain ______ ruined by the prolonged rain.A． wasB． wereC． isD． are