【单选题】When navigating in thick fog with the radar on,you should().
A.
station the look-out in the wheelhouse to keep a continuous watch on the radar
B.
secure the sounding of fog signals until a vessel closes within five miles
C.
station a look-out as low down and far forward as possible
D.
keep the radar on the shortest available range for early detection of approaching vessels
【简答题】影响魏晋南北朝时期文学发展的主要因素有哪些?
【单选题】When approaching a fog bank or rain squall, _______ should always be switched on.
【单选题】影响文化发展的重要因素有() ①社会制度的更替 ②科学技术的进步 ③思想运动 ④大众传媒的出现
【单选题】人们购买化妆品,并不是为了获得它的某些化学成分,而是要获得“美”这个角度来说,化妆品所提供的“美化”功能属于
【单选题】人们购买化妆品,并不是为了获得它的某些化学成分,而是要获 的“美能属于()。
【单选题】影响教师专业发展的主要因素除了社会因素、学校因素外,还有什么因素?