月末，“本年利润”总账贷方余额100000元，“利润分配”总账借方余额120000元

Which of the following statements about achieving proper timing in fiscal policy is FALSE（）

A. Improvements in quantitative methods have made the occurrence of recessions or expansions quite predictable.

B. There is usually a time lag between when a change in policy is needed and when the need is recognized by policy makers.

C. The time required to change tax laws and government expenditure programs can be lengthy.

谐波功率是由于（）设备产生。

A、电气化铁路

B、电解炉

C、扎钢机

D、非线性

患者呕吐吞酸，嗳气频繁，胸胁闷痛，脉弦。治疗应选用（）

A．干姜

B．高良姜

C．吴茱萸

D．丁香

E．小茴香

蟑螂侵入室内的途径有哪些？

电子商务就是企业运用各种电子化手段（）开展各类商务活动的总称。