纳税人在办理注销税务登记前，应当向税务机关结清应纳税款、滞纳金、罚款，缴销发票、税务登记证件。
参考答案：错
—Shanghai is the biggest city in China.
—Yes, it is than any other in our country.[ ]
A. bigger, city
B. biggest, cities
C. bigger, cities
D. biggest, city
离心泵的轴功率是指泵轴从原动机单位时间所获得的能量。
