【单选题】That________my first visit to Hong Kong,I didn't know where I should go first.There were so many things to enjoy. [ ]
【判断题】判断一个事件是否是随机事件的依据是一件事情在发生前能否预知结果。必然事件与不可能事件都是在一定条件下,结果能否发生是可以预知的,而随机事件却是无法确定的
【判断题】调速阀要起到调速稳定的性能,其前提条件就是减压阀要正常工作。
【单选题】以下对紧急事件的性质说法不正确的是( )。
【多选题】随机事件是具有以下特征的试验:
B.
在相同条件下可以重复进行,且每次试验的结果不止一个
C.
在每次试验前不能准确预言该试验会出现哪个结果,但可以知道该次试验可能出现的全部结果
【单选题】I didn't go to the cinema the day before yesterday, but I do wish I _____ there.
【单选题】I didn't go to the cinema the day before yesterday, but I do wish I _____ there.
【单选题】下列事件是随机事件(不包括必然事件和不可能事件)的是( )
【简答题】根据句意及首字母完成句子。 1.I think there must be s who didn't want to go to school. 2.I always make s animals with my brother on the beach. 3.My a is a doctor. 4.I l on the bed and go to sleep quickly. 5.I saw a...