What is the minimum GMDSS personnel requirement of drill platforms with Duplication of Equipment method operating in sea area A4?
A. Restricted Operator’s Certificate.
B. General Operator’s Certificate.
C. Second Class Radio Electronic Certificate.
D. First Class Radio Electronic Certificate.
查看答案
In sea area A2, regarding the minimum requirement of a GMDSS operator, which of the followings is correct?
A. GMDSS General operator license.
B. Third officer license.
C. General Radiotelephone Operator license and Radar endorsement.
D. General Radiotelephone license or First or Second Class Radiotelegraph license with GMDSS Radio Officer’s endorsement.
关于黄体功能不足,哪项错误
A. 孕激素水平不够,子宫内膜分泌反应不良
B. 月经周期缩短,往往伴不孕
C. 基础体温双相型
D. 基础体温下降缓慢,逐渐下降
E. 黄体期短,约10天
诊断无排卵性功血简单易行的方法是
A. 基础体温测定
B. 诊断性刮宫
C. 宫腔镜检查
D. 宫颈黏液结晶检查
E. 激素测定
原发性痛经与继发性痛经的主要区别是
A. 痛经史的长短
B. 有无家族史
C. 是否影响工作和学习
D. 有无排卵
E. 有无器质性病变
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