促进抗利尿素分泌的药物是()
A.氯磺丙脲
B.卡比吗唑
C.三碘甲状腺原氨酸
D.丙硫氧嘧啶
E.胰岛素
参考答案:A
---Tom is so worried about the test that he said he was going to study all night.
----Tell him he should quit _________and get some help.
A.to have worried
B.to worry
C.worring
D.from worrying
如图所示,用裁纸刀裁纸.加在裁纸刀上的动力为F,支点在O点,请在图中画出裁纸刀受到纸的压力示意图和动力臂并用相应的符号标明.