【单选题】More thunderstorms ______ in summer than any other time of the year.
【简答题】芳香酮类化合物C=O伸缩振动频率向低波数位移的原因为( )
【单选题】关于反馈调节不正确的是()
D.
正反馈的主要意义是是某一生理过程一旦开始迅速加强直到完成
【判断题】绿色软件可以分为狭义和广义两种,其中狭义的绿色软件在删除时,只要直接删除软件所在的文件夹即可,是最理想的绿色软件。
【单选题】听力原文: Thunderstorms are the least erous and least violent of all the storms. Almost everyone has experienced a thunderstorm with its heavy rains, high winds, lightning and accompanying thunder. Th...
A.
Equivalent to a hydrogen bomb.
B.
Equivalent to tons of TNT.
C.
Equivalent to tons of hydrogen bombs.
D.
Equivalent to a ton of TNT.
【单选题】关于负反馈调节特点的叙述,下列哪一项是正确的?
【单选题】Ted and his friends established a website offering useful information about thunderstorms ______ similar accidents happening.
【单选题】下列的叙述中不正确的是 [ ]
A.
甲状腺激素分泌的调节属于分级调节,不属于反馈调节机制
B.
激素既不组成细胞结构,又不提供能量,也不起催化作用
C.
在人体内甲状腺激素的受体比促甲状腺激素的受体分布广泛
D.
与水盐平衡调节相关的结构有下丘脑、大脑皮层、肾小管等
【多选题】Thunderstorms are expected in _______
【单选题】Thunderstorms have struck northern China, ______ heavy rain and ______ traffic chaos.
C.
having brought, having caused