当检波器磁钢受到强烈撞击后,可使磁场强度()
A、减弱
B、增加
C、稍增加
D、不减弱
参考答案:A
.
It didn’t _____ him that she would refuse his invitation
A.happen to
B.adjust to
C.belong to
D.occur to
甲状腺危象的主要诱因有()
A.精神刺激
B.手术前准备不充分
C.感染
D.重症患者131I治疗
E.寒冷