【单选题】7 1 mol的 300 K理想气体通过一次卡诺循环后, 吸热 3 kJ。通过此过程后, 气体的熵 。
【单选题】According to the passage, for which of the following reasons are the late seventeenth and early eighteenth-century Chinese records important?
A.
They contradict the theory of the Maunder minimum.
B.
They suggest that the Maunder minimum cannot be related to climate.
C.
They verify the existence of a span of unusual cold worldwide during the Maunder minimum.
D.
They show that the European observations are of dubious statistical significance.
【单选题】标明货物已经正确地装上船的提单被称为( )。
【简答题】案例1:小王在温州购买了100箱鞋子,准备运往金华销售,他雇了一辆15T的载货汽车运输。 案例2:张新从重庆运送200T土产杂品到上海,他采用铁路运输方式。 案例3:沈阳老龙口酒厂紧缺20T玉米原料,长春和锦州均有货源,货运调度安排货车走京哈高速经四平到长春。 案例4:陈大海要从徐州运50头生猪到南京,他选择公路货物运输,走徐州—连云港----淮安—扬州—南京线。 案例5:从浙江长兴运到上海的建筑...
【单选题】The author includes a discussion of the American black bear, Ursus americanus, most likely in order to
A.
provide additional support for the unique feeding habits of bears
B.
discount the theory regarding a bear's ability to remain well fed
C.
evaluate the dispute between advocates of differing theories regarding bear behavior
D.
challenge recent research on the way in which bears secure food
E.
suggest further investigation of human interaction with bears
【多选题】与逐步结转分步法相比,平行结转分步法的缺点是( )。