The ISPS Code consists of a mandatory section-Part A, which shows（）
A. the detailed security-related requirements
B. guidelines to meet security-related requirements
C. the detailed security-related requirements and the guidelines to meet them
D. how to run a shipping company considering the potential terrorism actio
介质只作一个方向的流动，而阻止其逆向流动的阀门是（）。
A. 截止阀
B. 止回阀
C. 闸阀
D. 截出阀
（）是指健康保险单在生效一段时期后，除非投保人或被保险人的误告是欺诈性的，否则保险人不能用保单中的实质性误告为由解除保险单或拒绝赔付。
A. 续保条款
B. 复效条款
C. 不可抗辩条款
D. 索赔条款
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