糖尿病最常见的死亡原因是
A.胰岛素绝对不足B.大量甲状腺素突然释放入血C.呼出的气体带烂苹果味D.甲状腺肿大、震颤、有杂音E.饥饿感,心慌手颤
参考答案:B
Pewter, _______ for eating and drinking utensils in colonial America, is about ninety percent tin, which copper or bismuth added for hardness.
A.was widely used
B.widely used it
C.widely used
D.which widely used
在发电机、变压器差动保护中,下列正确的说法是()
A、发电机过励磁时,差动电流增大;
B、变压器过励磁时,差动电流增大;
C、发电机过励磁时差动电流基本不变化,变压器过励磁时差动电流增大;
D、发电机和变压器过励磁是,差动电流均增大;