【单选题】Why is the latent period longer during an isotonic twitch of a skeletal muscle fiber than it is during an isometric twitch?
A.
Excitation-contraction coupling is slower during an isotonic twitch.
B.
Action potentials propagate more slowly when the fiber is shortening, so extra time is required to activate the entire fiber.
C.
In addition to the time for excitation-contraction coupling, it takes extra time for enough cross-bridges to attach to make the tension in the muscle fiber greater than the load.
D.
Fatigue sets in much more quickly during isotonic contractions, and when muscles are fatigued the crossbridges move much more slowly.
E.
The latent period is longer because isotonic twitches only occur in slow (Type I) muscle fibers.
【多选题】中国共产党创建的历史特点有
A.
是一个区别于第二国际旧式社会改良党的新型工人阶级革命政党
B.
不存在欧洲那种工人贵族阶层,没有社会改良主义的基础
C.
所接受的是没有被修正主义阉割的马克思主义的完整的科学世界观和社会革命论
D.
党的纲领决定了中国共产党在中国革命中不犯或少犯错误
【简答题】一、简述微分方程的一些基本概念 (微分方程、微分方程的阶、通解、特解、初值问题) 二、可分离变量微分方程求解的关键步骤是什么?
【单选题】二阶常微分方程的初值问题的解( )。
B.
是满足在初始点等于给定函数值及其导数值的解。
【多选题】A公司向B公司签发一张出票日期为10月20日、金额为100万元、出票后1个月付款的银行承兑汇票,甲银行为承兑人。11月1日,B公司将该汇票背书转让给C公司。11月5日,C公司在汇票的背面记载"不得转让"字样后,将该汇票背书转让给D公司。11月10日,D公司在汇票粘单上记载"只有E公司交货后,该汇票才发生背书转让效力"字样后,将该汇票背书转让给E公司。11月15日,E公司将该汇票背书转让给F公司。1...
B.
甲银行拒绝付款的理由不成立,甲银行应当向持票人F公司无条件付款
C.
如果甲银行已经向F公司付款,甲银行有权对出票人A公司尚未交付的汇票金额按照每天万分之三计收利息
D.
如果甲银行已经向F公司付款,甲银行有权对出票人A公司尚未交付的汇票金额按照每天万分之五计收利息
【单选题】在库存控制订货点法中,订货点的计算公式为 。
C.
订货点=单位时间的库存消耗水平×订货提前期+安全库存量
D.
订货点=单位时间的库存消耗水平×订货提前期+最大库存量
【简答题】A young man once went into town and bought himself a pair of trousers. When he got home, he went upstairs to his bedroom and put them on. He found that they were about two inches (英尺) longer. He went ...
【单选题】Which of the following might be associated with a shortening working capital cycle?
A.
Lower net operating cash flow
B.
Increasing tax‐allowable depreciation expenditure
C.
Slower inventory turnover
D.
Taking longer to pay suppliers