【判断题】巴西人平常主要吃欧式西餐,肉类所占比重较大。( )
【简答题】简述电容式传感器的工作原理。根据其原理,电容式传感器可分为哪几种类型?
【单选题】two vessels meeting in a head-on situation are directed by the Rules to _____
A.
alter course to starboard and pass port to port
B.
alter course to port and pass starboard to starboard
C.
decide on which side the passage will occur by matching whistle signals
D.
slow to bare steerageway
【单选题】目前疗效较好、药量小的抗囊虫药物是:( )
【简答题】Vessels to which Annex V to MARPOL 73/78 applies may discharge garbage containing plastics ______.A. 5 nautical miles from nearest land B. 12 nautical miles from nearest land C. 25 nautical miles f...
【简答题】作用分为几类?什么叫作用的标准值、可变作用的准永久值、可变作用的频遇值?