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【判断题】
电路中,规定电位升高的电压的实际方向。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【简答题】向浓度为0．30 mol．dm。的HCl溶液中，通入H2S达饱和(此时H2S的浓度为0．10 mol． dm－3)，求此溶液的pH和S2－离子浓度。
【简答题】Listen to the monolog and decide whether the following statements are true (T) or false (F).
【简答题】Listen to the monolog(独白) and decide whether the following statements are true (T) or false (F).
【简答题】H2S溶液中 S2-浓度为________。
【判断题】Listen to the monolog ue and decide whether the following statements are true (T) or false (F). Early in the morning and right after lunch are popular meeting times.
A.
正确
B.
错误
【判断题】Listening Task 4 Listen to the monolog and decide whether the following statements are true (T) or false (F). 1.Early in the morning and right after lunch are popular meeting times.
A.
正确
B.
错误
【判断题】Task 4 Listen to the monolog and decide whether the following statements are true (T) or false (F). 1. Early in the morning and right after lunch are popular meeting times. .
A.
正确
B.
错误
【简答题】Listen to the monolog and decide whether the following statements are true or false.
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