为了做好防冻防凝工作，低温处的阀门井、消火栓、管沟要逐个检查，排除积水，采取（）措施。
A、加固
B、疏导
C、防冻保温
D、吹扫
参考答案：C
Lucy called everyone and told them she ______ have the party. [ ]
A. isn't going to
B. wasn't going to
C. won't
按月缴纳增值税的纳税人，自期满之日起（）日内申报纳税。
A．5
B．10
C．15
D．20
