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问题 单项选择题

机组冷态启动带25%额定负荷（或按制造要求），运行（）后方可进行超速试验。

A、3～4小时

B、4～5小时

C、5～6小时

答案

参考答案：A

解答题
直接写出得数．
3
4
÷
3
4
=
1
3
÷3=
1
7
×14=
3.2-
9
10
=
1
2
+
1
5
=
3
5
÷
1
5
=
5
9
×
3
5
=
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单项选择题

An analyst does research about difference between Generally Accepted Accounting Principles (U. S. GAAP) and Intemational Financial Reporting Standards (IFRS). The indirect method of presenting cash flow from operation is NOT allowed under（）

A. IFRS ortly.

B. U. S. GAAP only.

C. Neither IFRS nor U. S. GAAP.
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