用交流电磁化作()检验时,需作断电相位控制
参考答案:剩磁法
After the war, a new school building was put up ______there had once been a theatre.
A.when
B.in which
C.the place where
D.where
男性,70岁。余留牙影响义齿修复求拔除。患者曾患过脑栓塞,长期服用阿司匹林。为防止拔牙术后出血应查()
A.X线片检查
B.血常规检查
C.血小板计数
D.凝血酶原时间
E.心电图检查