Her brother was ____ at her words.
A.annoy
B.annoying
C.annoyed
D.beingannoying
答案:C
患儿,7岁,肾病综合征,医嘱给予的治疗是肾上腺糖皮质激素的长程疗法,该疗法的疗程为()。
A.2~4周
B.1~2个月
C.4~6个月
D.5~6个月
E.9~12个月
杠杆的五要素是指
(1)杠杆转动时绕着的固定点叫 ;
(2) 的力叫动力;
(3) 叫阻力;
(4)从 到 的距离叫动力臂;
(5)从 到 的距离叫阻力臂。