【单选题】A person with myasthenia gravis notes increased muscle strength when he is treated with an acetylcholinesterase (AChE) inhibitor. The basis for his improvement is increased
A.
Amount of acetylcholine (ACh) released from motor nerves
B.
Levels of ACh at the muscle end plates
C.
Number of ACh receptors on the muscle end plates
D.
degradation of ACh at cleft of neuromuscular junction
【单选题】A 42-year-old man with myasthenia gravis notes increased muscle strength when he is treated with an acetylcholinesterase (ACHE) inhibitor. The basis for his improvement is increased
A.
amount of acetylcholine (Ach) released from motor nerves
B.
levels of Ach at the muscle end plates
C.
number of Ach receptors on the muscle end plates
D.
amount of norepinephrine released from motor nerves
E.
synthesis of norepinephrine in motor nerves
【判断题】Hypertropy refers to the increased size of a muscle.
【简答题】题9一19图所示两个相同的圆柱体,质量m=6.35kg,半径r=127mm,绳子连接如图所示。当t=0时将系统由静止释放。 试求: (1)在t=3s时圆柱体B的中心速度; (2)两个圆柱间绳子的拉力。
【单选题】如图9-30所示的MAN-B&W-S-MC/MCE主机操作系统中,管19的信号表示____。
【判断题】Increased muscle will increase your metabolism, and an increased metabolism means that you can burn more calories and lose more weight even when you are moving.
【简答题】如图9—19所示的导线通电流I,置于一个与磁感应强度为B的均匀磁场垂直的平面上,方向如图。求此导线所受的磁场力的大小与方向。
【简答题】2015年。日本首相将发表战后70周年谈话,安倍如何表态受到世界瞩目,中日关系走向再次成为人们关注的热点。近代以来,中日两国发生过两次大规模的战争,严重影响了两国关系。阅读下列材料,回答问题。
材料一:明治维新后,日本对外扩张的野心不断膨胀,逐渐形成了侵略,夺取中国的东北和,占领全中国,进而征服全世界的对外扩策。
材料二:中日历史的对话空间是三个层面互相交错的,政治,情感,和学...
【简答题】请填空:建立如下图 9-19 所示存储结构所需的说明语句是 _______ 。建立如下图 9-19 所示为变量 a 输入数据的输入语句是 _______ 。建立如下图 9-19 所示存储结构所需的赋值语句是 _______ 。 图 9-19