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教学效能感的概念来源于美国心理学家（）的自我效能理论。自我效能感是指人对自己能否成功地进行某种成就行为的主观推测和判断，它包括结果预期和效能预期两个成分。

答案

参考答案：班杜拉

单项选择题 A1/A2型题

正常脾脏浊音区的宽度是（）

A.3～4cm

B.5～6cm

C.4～7cm

D.5～8cm

E.6～8cm
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单项选择题

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 (171) . Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to (172) 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 (173) of service attacks or steal (174) information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with (175) 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.

（172）是（）

A.venomous

B.malicious

C.felonious

D.villainous
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