题目内容

下列关于蒸发浓缩的论述错误的是

A. 蒸发浓缩就是不断地加热以使溶剂气化和不断地排出所产生的蒸汽
B. 蒸发可在常压或减压下进行
C. 单位时间，单位传热面积上蒸发的水量与传热温差及传热系数成反比
D. 生产上的蒸发浓缩多采用沸腾蒸发
E. 蒸发的效率常以蒸发器的生产强度来衡量

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Which of the following statements is (are) true？ ()
Ⅰ. The number of cyclic subgroups of the additive group of integers is infinite
Ⅱ. The number of cyclic subgroups of the additive group of real numbers is infinite

A. Ⅰ and Ⅱ
B. Ⅰ only
C. Ⅱ only
D. neither Questions 43、44 refer to the space requirements of different methods of storing graphs. The Choices for these questions are combinations of the following statements. Ⅰ. The space required depends on the number of vertices Ⅱ. The space required depends on the number of edges

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下列关于蒸发浓缩的论述错误的是

Which of the following statements is (are) true？ ()Ⅰ. The number of cyclic subgroups of the additive group of integers is infiniteⅡ. The number of cyclic subgroups of the additive group of real numbers is infinite

根据健康问题的轻重缓急，将多个护理诊断按紧迫性的次序进行排序，可依据

患者行大隐静脉高位结扎术后第一天活动宜选用

属于长期备用医嘱的是

Which of the following statements is (are) true？ ()
Ⅰ. The number of cyclic subgroups of the additive group of integers is infinite
Ⅱ. The number of cyclic subgroups of the additive group of real numbers is infinite