中国第一家电视台创办于()年的()。
A.1958年,北京电视台
B.1978年,上海电视台
C.1958年,中央电视台
D.1958年,新华电视台
参考答案:A
在X≥3N的距离上,声程增加一倍时,横通孔的反射声压为原来的()
A、1/2.8倍
B、4倍
C、1.42倍
D、1/4倍
E、1/8倍
All of the following can be a motivation to change the depreciation method for financial reporting purposes EXCEPT:()
A. debt covenants attached with accounting results.
B. an increase in cash flows.
C. management compensation contracts which are based on reported net earnings.