【单选题】when you doubt the existence of risk of collision,_______
A.
such risk shall be deemed to exist
B.
such risk shall NOT be deemed to exist
C.
you should keep your speed and course
D.
you needn’t take any action to avoid collision with any vessel
【单选题】—Was he still there when you were away to answer the phone? —There is no doubt about it, but he ________ soon afterwards.
【判断题】单位冲激函数δ(t)是单位阶跃函数ɛ(t)的积分。
【判断题】两个单位冲激函数的卷积积分是单位阶跃函数。
【单选题】When you doubt the existence of risk of collision, ________.
A.
such risk shall be deemed to exist.
B.
such risk shall not be deemed to exist.
C.
you should keep your course and speed.
D.
you needn’t take any action to avoid collision with any vessel.
【单选题】顾客导向的品类角色定位通常利用什么 指标作为衡量维度
【简答题】辛弃疾(1140-1207) 词人。字 ,号 ,他在苏轼的基础上,大大开拓了词的思想意境,提高了词的文学地位,后人遂以“ ”并称。
【简答题】辛弃疾(1140-1207), (朝代)爱国词人。字 ,号 ,历城(今山东济南)人。与苏轼并称“ ”。
【单选题】When you doubt the existence of risk of collision,().
A.
such risk shall be deemed to exist
B.
such risk shall not be deemed to exist
C.
you needn't take any action to avoid collision with any vessel
D.
you should accelerate your speed ahead