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【判断题】
地下室防水按所用材料有卷材防水、砂浆防水防水和涂料防水。()A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】用已知浓度的盐酸滴定未知浓度的NaOH溶液时，下列操作中正确的是______。
A.
酸式滴定管用蒸馏水洗净后，直接加入已知浓度的盐酸
B.
锥形瓶用蒸馏水洗净后，直接加入一定体积的HCl溶液
C.
滴定时，没有逐出滴定管下口的气泡
D.
读数时，视线与滴定管内液体的凹液面最低处保持水平
【简答题】You may give a cold shoulder to a friend who has not kept a 18 he made to you. Or, to someone who has lied about you to others.
【简答题】You have a friend who is about to enter university. He wants you to advise him which subject to specialize in, history , in which he is very interested, or computer science, which offers better job op...
【简答题】Suppose you have a friend who is about to enter university, and he wants you to advise him on which subject to specialize in—history, in which he is very interested, or computer science, which offers ...
【单选题】用已知浓度的盐酸滴定未知浓度的氢氧化钠溶液时，下列操作会引起测定结果偏高的是：（1）滴定时，装待测溶液的锥形瓶有少量水；（2）酸式滴定管用蒸馏水洗后，未用标准溶液洗；（3）滴定终点读数时，仰视刻度线 ( )
A.
只有（1）
B.
只有（2）
C.
（2）（3）
D.
（1）（2）（3）
【单选题】___ whether he is right or wrong, you have to do what he tells you to do.
A.
With the exception of
B.
Regardless of
C.
In the light of
D.
By virtue of
【简答题】滴定液是与被测组分反应、准确浓度已知的试剂溶液,其浓度用____ 、____和____表示。
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