正确答案: B
five years from the date of issue
题目:The International Oil Pollution Prevention Certificate is valid for a period of
解析:B
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举一反三的答案和解析:
[单选题]泵的总效率是指( )。
有效功率与轴功率之比
[单选题]In a modern three-phase
The winding on the rotor is for inputting excitation current.
[单选题]CWBT是( )的简称。
船舶维修保养体系
[单选题]During PSC inspection related to the ISM Code,_____of the Safety Management System (SMS) should be carried out if clear grounds are established
a more detailed inspection
[单选题]STCW规则第VI章为_。
应急、职业安全和救生职能
[单选题]下列关于喷油泵出油阀的工作特性中错误的是( )。
等容卸载出油阀其卸载客积随柴油机转速而变化
[单选题]在墨卡托海图上:()
以上都对
[单选题]鲨鱼的眼睛视网膜不能辨别颜色,但对反差强烈的物体颜色是:
黑和白
[单选题]消化系统由______组成。
消化管和消化腺