【简答题】Hawking became world-famous in _______. his thirties in the 1970’s the thirties in his 1970 his 30s in 1970’s the thirties during the 1970
【判断题】两个相邻的含水层之间一定存在一个绝对隔水层。
【多选题】采集溶解氧水样应在现场固定,固定方法是( )。
【多选题】根据不同短视频的特点,适合短视频推广的渠道包括( )。
【单选题】.Hawking became world-famous in _______.
A.
his thirties in the 1970’s
B.
the thirties in his 1970
D.
the thirties during the 1970
【单选题】About _______ of the workers in the factory were born in the _______. [ ]
【单选题】采集溶解氧水样应在现场固定,固定方法是( )。