在FoxPro中，如果要对当前表按列进行求和，应使用的命令是（）。

[单选题]To compete in today's fast-paced competitive environment, organizations are increasingly allowing contractors, partners, visitors and guests to access their internal enterprise networks.These users may connect to the network through wired ports in conference rooms or offices, or via wireless access points. In allowing this open access for third parties, LANs become(6) .Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to(7)activity. For many organizations, however,the operational complexity and costs to ensure safe third party network access have been prohibitive. Fifty-two percent of surveyed CISOs state that they currently use a moat and castle's security approach, and admit that defenses inside the perimeter are weak. Threats from internal users are also increasingly a cause for security concerns. Employees with malicious intent can launch (8) of service attacks or steal (9) information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with (10) and worms acquired from unprotected public networks. Hackers masquer-ading as internal users can take advantage of weak internal security to gain access to confidential information. 空白处（7）应选择（）

[单选题]可用于驱肠道吸虫药是（　　）。

[单选题]下列不属于教育行政法规的文件是（　　）。

[名词解释题]正常交易定价原则

[名词解释题]审计目标

[单选题]当鼻咽癌放疗到3600～4000cGy缩野时，一般上界、前界不动，后界一般到（）。

[单选题]下列情况下，不宜做超声引导下无水乙醇治疗的是（）。

[名词解释题]语言整化

[单选题]统藏失司的出血反映哪两脏病变？（　　）

[单选题]有关细胞凋亡正确的描述是