【单选题】下列说法正确的是
A.
△H <0 ,△S>0的反应在温度低时不能自发进行
B.
在其他条件不变时,增大反应物的浓度,可以增大活化分子百分数
C.
因为焓变和熵变都与反应的自发性有关,因此焓变或熵变均可以单独作为反应自发性的判据
D.
NH 4 HCO 3 (g)═NH 3 (g)+H 2 O(g)+CO 2 (g)△H = +185.57kJ/mol能自发进行,原因体系有自发地向混乱度增加的方向转变的倾向
【单选题】The engineers are so busy that they have no time for outdoor sports activities, ________ they have the interest.
【单选题】孙中山对太平天国的土地政策有着极高的评价.他认为三民主义的民生主义正是太平天国土地平均的继承,“民生主义,即贫富均等。不能以富者压制贫者是也。但民生主义,在前数十年已有人创之者。其人为何?即洪秀全是。”太平天国的《天朝田亩制度》与孙中山的“民生主义”相同点是
【单选题】_______are dangerous or challenging sports activities.
A.
paragliding and jogging
B.
football and skateboarding
C.
basketball and mountain biking
【单选题】日本第一次参加西方先进国家首脑会议是在()年。
【单选题】The engineers are so busy that they have zero time for outdoor sports activities, ________ they have the interest. [ ]
【单选题】因特网为人们提供了一个庞大的网络资源,下列关于因特网功能的描述不正确的是()
【单选题】太平天国的《天朝田亩制度》与孙中山民生主义的相同点是( )
【简答题】Those who avoid competitive sports in favour of noncompetitive physical activities seem to be looking for ______.