企业长期股权投资的账面价值大于可收回金额低于其时,应按其差额,借记“资产减值损失—计提的长期股权投资减值准备”科目,贷记“长期股权投资减值准备”科目。()
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假设类 ClassB是 ClassA的子类,其中 ClassA 的属性和方 法如图所示,则 ClassB能够访问的有哪些?
在绘制类图时,第一步就是发现类,最常用的方法是什么?请简要说明它的使用方法。
The first internal-combustion engine to operate successfully on the four-stroke cycle used gas as the energy source and was built in ____ by Nicolaus August Otto, a self-taught German engineer at the Deutz factory near Cologne.
A. 1876
B. 1877
C. 1878
D. 1879
The main components of an engine are _____, _____, _____, _____ and valves.
A. cylinder block
B. pistons
C. connecting rods
D. crankshaft