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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】未婚女工程师的表达式是( )。
A.
婚否=．F．．AND．职称；”工程师”．AND．性别=”女”
B.
NOT．婚否．AND．职称=”工程师”AND．性别=”女”
C.
婚否=．F．．0R．职称=”工程师”．0R.性别=”女”
D.
NOT．婚否．AND．职称=”工程师”+．性别=”女”
【单选题】The traditional two- parents family is fast giving way in the America of the 1980s to households in which one adult must juggle the often enormous demands of making a living and raising children. For ...
A.
Another 3 million of them live in poverty.
B.
The number of them increased by about 20 percent in just three years.
C.
The number of them increased by about 3 percent in the 1980s.
D.
They were not affected at all.
【单选题】The traditional two-parents family is fast giving way in the America of the 1980s to households in which one adult must juggle the often enormous demands of making a living and raising children. For m...
A.
Another 3 million of them live in poverty.
B.
The number of them increased by about 20 percent in just three years.
C.
The number of them increased by about 3 percent in the 1980s.
D.
They were not affected at all.
【单选题】未婚男教师的逻辑表达式为( )。
A.
婚否=.F..AND．职业=’教师’．AND．性别=，男’
B.
婚否=.F..AND．职业=’教师’．AND．性别=’男’
D.
婚否=.F..职业=，教师’，性别=’男’ D．婚否=.F..AND．职业=’教师’+性别=’男’
【单选题】未婚男教师的逻辑表达式为( )。
A.
婚否=.F..AND．职业=’教师’．AND．性别=，男’
B.
婚否=.F..AND．职业=’教师’．AND．性别=’男’
C.
婚否=.F..职业=，教师’，性别=’男’
D.
婚否=.F..AND．职业=’教师’+性别=’男’