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【單選題】
配制一定物質的量濃度的NaOH溶液時，造成所配溶液濃度偏高的原因可能是
A.
容量瓶中原來含有少量蒸餾水
B.
燒杯中溶解NaOH后，未經冷卻，立即轉移至容量瓶并洗滌燒杯，定容
C.
溶解NaOH的燒杯沒有洗滌
D.
向容量瓶中加水定容時眼睛一直仰視刻度線
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舉報參考答案：
舉一反三
【單選題】Every person needs water and a diet of healthy food ______some fat, some fibre and a little salt .
A.
gaining
B.
containing
C.
keeping
D.
including
【單選題】He insisted he_ _ ill , but I suggested medical care_ ____to him .
A.
wasn’t/was given
B.
was/was given
C.
wasn’t/be given
D.
was/should given
【單選題】He apologized ________ late.
A.
to his teacher to arrive
B.
at his teacher for arriving
C.
at his teacher to arrive
D.
to his teacher for arriving
相關題目：
【單選題】Every person needs water and a diet of healthy food ______some fat, some fibre and a little salt .
A.
gaining
B.
containing
C.
keeping
D.
including
【單選題】He insisted he_ _ ill , but I suggested medical care_ ____to him .
A.
wasn’t/was given
B.
was/was given
C.
wasn’t/be given
D.
was/should given
【單選題】He apologized ________ late.
A.
to his teacher to arrive
B.
at his teacher for arriving
C.
at his teacher to arrive
D.
to his teacher for arriving
參考解析：
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