我是一名自由职业者,没有公司为我缴存公积金,不知个人可以缴存公积金吗?如何办理?
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当天然水中的碱度=硬度时,水中没有()盐硬度,也没有()盐碱度,只有()盐硬度。
An administrator must assign static IP addresses to the servers in a network.For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP propertied box for the sales server?()
A. IP address:192.168.20.14 Subnet Mask:255.255.255.248 Default Gateway:192.168.20.9
B. IP address:192.168.20.254 Subnet Mask:255.255.255.0 Default Gateway:192.168.20.1
C. IP address:192.168.20.30 Subnet Mask:255.255.255.248 Default Gateway:192.168.20.25
D. IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.17
E. IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.25
利用与拟建项目类型相同的现有项目的职业病危害因素资料进行类推的识别方法是类比法。
A. 正确
B. 错误
在试油、小修作业中,起下大直径工具(如封隔器)时发生溢流,应采取怎样的关井程序?