设A为一单独概念,B是一普遍概念,则A与B的外延不可能是().A.全同关系 B.A真

题型:多项选择题

问题:

设A为一单独概念,B是一普遍概念,则A与B的外延不可能是().

A.全同关系

B.A真包含于B

C.交叉关系

D.全异关系

E.A真包含B

考点:哲学逻辑学逻辑学题库
题型:多项选择题

为了消除或减弱围护结构内部的冷凝现象,下列措施不正确的是()?

A.在保温层蒸汽流入的一侧设置隔汽层

B.隔汽层应布置在采暖房屋保温层的内侧

C.隔汽层应布置在冷库建筑的隔热层的外侧

D.在保温层蒸汽流出的一侧设隔汽层

题型:多项选择题

对电力系统继电保护的基本要求是()

A.有选择性、灵敏度好、经济性好、可靠性高

B.有选择性、动作迅速、灵敏度好、可靠性高

C.动作迅速、有选择性、经济性好、可靠性高

D.动作迅速、经济性好、有选择性、灵敏度好

题型:多项选择题

下列说法中正确的是(  )

A.通电直导线在磁场中一定受磁场力的作用

B.通电直导线在磁场中受到的安培力方向与磁场方向相同

C.通电直导线是通过电场对其周围的小磁针产生力的作用的

D.显象管中的电子束能发生偏转是因为电子受到洛伦兹力的作用

题型:多项选择题

紧急故障停机和故障停机的原则()

A.当机组发生即将造成人员或设备损坏的故障时,应紧急故障停机

B.当机组出现故障但还有可请示和调整时间,在调整无效机组继续运行可能造成事故时应故障停机

C.1#锅炉水位异常时

D.循环水异常时

题型:多项选择题

The United States is well known for its network of major highways designed to help a driver get from one place to another in the shortest possible time.Although these wide modem roads are generally (1) and well maintained, with few sharp curves and straight sections, a direct route is not always the most (2) one. Large highways often pass (3) scenic areas and interesting small towns. Furthermore, these highways generally (4) large urban centers, which means that they become crowded with heavy traffic during rush hours, (5) the" fast, direct" route becomes a very slow route.However,there is almost always another route to take if you are not in a hurry. Not far from the (6) new" superhighways", there are often older, (7) heavily traveled roads which go through the countrvside. (8) of these are good two-lane roads ; others are uneven roads curving through the country. These secondary routes may go up steep slopes, along high cliffs, or down frightening hillside to towns (9) in deep valleys. Through these less direct routes, longer and slower, they generally go to places (10) the air is clean and scenery is beautiful, and the driver may have a chance to get a fresh, clean view of the world.

 

第(4)空应选择()

A.lead

B.connect

C.collect

D.communicate

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