题目内容

游泳比赛中，二块秒表计时其决定成绩为，取（）

A. 最好成绩
B. 平均成绩
C. 最差成绩

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《船舶安全检查通知书》一式三份，一份留在《船舶安全检查记录簿》内，一份寄（），一份由港务（航）监督存查。

试述短语在语法中的重要地位。

Your network consists of a single IPv4 subnet. The subnet contains 20 computers that run Windows 7. Youadd a new computer named Computer1 to the subnet. You discover that Computer1 has an IP address of169.254.34.12. You cannot connect to other computers on the network. Other computers on the networkcan connect to each other. You need to ensure that you can connect to all computers on the network. What should you do?（）

A. Turn off Windows Firewall.
B. Run Ipconfig.exe /renew.
Configure a static TCP/IP address.
D. Run Netsh.exe interface ipv4 install.

油品的（）标志着油品爆炸和着火的危险性。

A. 倾点和燃点
B. 闪点和倾点
C. 沸点和燃点
D. 闪点和燃点