对于手压泵液压球阀，在开关完后，应及时向球体密封圈充压.
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Of the threats discussed below， what is the main advantage of using Cisco Secure Desktop which is part of the Cisco ASA VPN solution？（）
A. Secure desktop will create a completely separate computing environment thatwill be deleted when you are done.This ensures that no confidential data has been left on the shared/public computer.
B. Secure desktop is used to protect access to your registry and systemfiles when browsing to SSL/VPN protectedpages.
C. Secure Desktop ensures that an SSLprotected password cannotbe exploitedby a man in the middle attackusing a spoofed certificate.
D. Secure desktop hardens the operating system of the machines you are using at the time secure desktop islaunched.
《水利水电工程施工合同条件》规定，监理人收到承包人提交的完工验收申请报告并经审核认为工程已具备完工验收条件，应在收到完工验收申请报告后的（）内提请发包人进行工程验收。
A. 14天
B. 28天
C. 42天
D. 56天
蒽醌在（）溶液中，可被锌粉还原，生成（）及其互变异构体（）；在酸性条件下被还原生成（）及其互变异构体（）；（）衍生物一般存在于新鲜植物中。
关于创造描述正确的是（）。
A. 创造是智力因素和非智力因素的结晶
B. 创造是显意识和潜意识的交融
C. 创造是形象思维与逻辑思维的互补
D. 创造是求异思维与求同思维的统一
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