设A、B为两个相互独立的事件PA∪B=0.6,PA=0.4,则PB等于()。
A.A
B.B
C.C
D.D
参考答案:A
根据下列句子所给的提示及句意,写出句子空缺处各单词的正确形式。
小题1:I never feel ________ (无聊的) or unhappy when he is with me.
小题2:He lives __________(独自), so he often feels _________(寂寞).
小题3:This dress is very popular this year. Do you know who the ________(design) is?
小题4:He didn’t ______(出现) until ten o’clock last night.
小题5:They are having an ____ (采访) with Mr. Green about the changes in his hometown.
小题6:Traveling____(到国外) has become fashionable.
小题7:The castle looked______(shine)and beautiful under the fireworks.
基础工程划分4个施工过程(挖基槽、作垫层、混凝土浇筑、回填土)在5个施工段组织固定节拍流水施工,流水节拍为3天,要求混凝土浇筑2天后才能进行回填土,该工程的流水施工工期为( )天。
A.39
B.29
C.26
D.14