某公司将维持企业生存作为其定价目标，则选择低运价策略合适，否则运价过高将丧失货源。

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 ___72___. Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to ___73___ 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 ___74___ of service attacks or steal ___75___ information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with ___76___ and worms acquired from unprotected public networks. Hackers masquerading as internal users can take advantage of weak internal security to gain access to confidential information.

75（）

A．reserved

B．confidential

C．complete

D．mysterious

患者女性，29岁。孕2产1。因停经2⁺月， * * 不规则流血半月入院。妇科检查：子宫约3个月大、质软，双侧附件扪及约50日妊娠大的囊性包块，尿妊娠试验（+）。B超检查宫腔内呈现"落雪状"图像，无妊娠囊和胎儿。

该患者术后随访期间，首选的避孕措施是 （）

A.阴茎套

B.宫内节育器

C.安全期避孕

D.口服短效避孕药

E.速效避孕药

已知BrCl能发生下列反应：nBrCl+2M====MCl_n+MBr_n（M为+n价金属元素），BrCl+H₂O====HCl+HBrO；以下推论不正确的是

A．BrCl具有和卤素单质相似的化学性质

B．BrCl和M反应时，BrCl只作氧化剂

C．将BrCl和NaOH溶液反应生成NaCl和NaBrO两种盐

D．将BrCl跟FeSO₄溶液反应，溶液会变成无色

因特网和内部网的培训内容都可以储存在计算机内，并通过其网络系统来运用。

常规铜版纸平版胶印时采用的网点密度是（）线／英寸。

A、110

B、133

C、175

D、200