刮削是靠人的力量,切削量小,切削力小,因此只适于粗加工。()
参考答案:错
术后并发甲状腺危象的主要原因是()
A.术后未服碘剂
B.术中出血过多
C.甲状腺切除过少
D.术前准备不充分
E.精神过度紧张
The weather in the USA is different that in England. [ ]
A. from
B. between
C. with