在开始任何检修、保养和修理等操作前,务必首先熄灭发动机
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在标定标准溶液浓度时,平行试验不得少于8次,2人各做四平行,每人四平行测定结果极差的相对值不得大于重复性临界极差〔CrR95(4)〕的相对值(),两人八平行测定结果极差的相对值不得大于重复性临界极差〔CrR95(8)〕的相对值0.18%,取两人八平行测定结果的平均值为测定结果。在运算过程中保留五位有效数字,浓度值报出结果取四位有效数字。
慢喉瘖的预防与护理是()。
A. 保持声带休息,少讲话
B. 生活有规律
C. 禁食煎炒炙煿之品
D. 忌烟酒刺激
E. 以上都是
You work as a senior administrator at ABC.com. The ABC.com network consists of a single domain named ABC.com. All servers on the ABC.com network have Windows Server 2012 R2 installed. You are running a training exercise for junior administrators. You are currently discussing the Windows Firewall with Advanced Security feature. Which of the following is TRUE with regards to Windows Firewall with Advanced Security?()
A. It provides host-based,two-way network traffic filtering for a computer.
B. It provides host-based,one-way network traffic filtering for a computer.
C. It blocks unauthorized network traffic flowing into or out of the local computer.
D. It only blocks unauthorized network traffic flowing into the local computer.
E. It only blocks unauthorized network traffic flowing out of the local computer.