【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
【单选题】The radar warning systems can
A.
tell drivers accidents on the road in advance.
B.
remind drivers when there is only a little oil left.
C.
help drivers change the direction.
D.
give alarm signals if drivers get too close to other cars.
【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?