En cas d'incendie, vous devez____ les pompiers.
A.appeler
B.dire
C.crier
D.venir
参考答案:A
A depreciable asset with a 4-year useful life and no residual value was bought on 1 January 2011 for $20000. Depreciation in Year 2 is the highest under the:()
A. straight-line method.
B. 125% declining balance.
C. 175% declining balance.
升级操作系统,为操作系统或服务器软件打补丁等日常事务,提高了系统的安全系数,但是依然不能防止黑客通过相关漏洞实现入侵。