同步发电机带纯电感性负载时,是()电枢反应,使主磁场削弱。
参考答案:直轴去磁
动词填空:用括号内所给动词的适当形式填空,并将答案写在答题卡标有题号的横线处(本大题共8小题,每小题1分,共8分)
小题1:The old man exercises every day __________(improve) his health.
小题2:The firemen __________(control) the fire, so all of you are out of danger now.
小题3:The Great Wall as well as the Palace Museum _______ (attract) lots of tourists from home and abroad every year.
小题4:Please stop talking, guys. I can’t hear what the youth worker (explain).
小题5:It was reported that the plane to Beijing (fly) back to Tokyo by the time of 2:30 yesterday afternoon because of the rainstorm.
小题6:If Steve finishes the job in time, he ____________ (allow) to have a two-week off.
小题7:—Did you notice anybody enter the building just now?
—Sorry, I (cut) down the tree in the garden.
小题8:The three boy students Miss White paid special attention to (make) great progress at last.
关于急性胰腺炎的治疗哪项说法正确()
A.非手术治疗限于症状轻的水肿性胰腺炎
B.未手术的病人不需要禁食和胃肠减压
C.伴有胆总管梗阻的重症病人,应早期手术或内镜括约肌切开取石
D.无胰周感染的病人不用抗生素
E.重症(出血坏死性)病人一经确诊,应立即手术治疗