基层规范中规定采用重型击实试验最大干密度作为标准干密度。
参考答案：对
What is suggested for your investment
A．Distributing your money among different companies.
B．Investigating the company before investment.
C．Don’t invest all your money.
D．Comparing different companies before investment.
( )可以通过SNMP协议来远程监控。
A．可堆叠式集线器
B．带网管功能的智能集线器
C．10/100Mbps自适应集线器
D．所有集线器
