【简答题】促胰液素的主要生理作用是促进( )分泌,抑制( )的运动。
【多选题】低损耗油浸变压器采用的改进措施包括()
A.
通过加强线圈成绝缘,是绕组线圈的安匝数平衡,控制绕组的漏磁道,降低了杂散损耗。
B.
变压器油箱上采用片式散热器代替管式散热器,提高了散热系数。
C.
铁芯绝缘采用了整块绝缘,绕组出线和外表面加强绑扎,提高了绕组的机械强度。
D.
变压器油箱上采用管式散热器代替片式散热器,提高了散热系数
【简答题】Li sten to a presentation on safety procedures on an oil platform. F ill in the blanks as you listen to the recording.
【判断题】在我国,所有民事案件实行两审终审制度。( )
【单选题】We can infer that the author's opinion of accidents is that .
A.
safety precautions are of little use in accidents
B.
many accidents can and should be avoided
C.
factory accidents, unlike road accidents, are inevitable
D.
most road accidents are caused by just a few careless drivers
【单选题】The safety of Life at Sea Convention was developed by the __________
B.
American Bureau of Shipping
C.
International Maritime Organization
D.
American Institute of Maritime Shipping