胸部X线检查对肺结核的临床诊治有何价值?试述各型肺结核的X线特点。
被测流体的绝对压强（）外界大气压强时，所用测压仪表称为真空表。
A. 大于；
B. 小于；
C. 等于；
D. 近似于。
对二叉树的遍历可分为（）、（）、（）、（）四种不同的遍历次序。
Which three statements accurately describe IOS Firewall configurations？（）
A. The IP inspection rule can be applied in the inbound direction on the secured interface
B. The IP inspection rule can be applied in the outbound direction on the unsecured interface
C. The ACL applied in the inbound direction on the unsecured interface should be an extendedAC
D. For temporary openings to be created dynamically by Cisco IOS Firewall， the access-list for thereturning traffic must be a standard ACL
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