热电偶有哪些特点?
参考答案:
(1)测量精确度高;
(2)结构简单,制造方便;
(3)动态响应快;
(4)可进行远距离测量;
(5)测温范围广。
When I came back to my hometown again, I found it changed so much that I could hardly _______it。
A.remember
B.realize
C.imagine
D.recognize
45岁妇女患Ⅱ度子宫脱垂伴 * * 前后壁明显膨出。两个月前患乙型肝炎住院治疗50天,现来院咨询避孕方法,应选用
A.安全期避孕
B.外用避孕药膜
C.官内节育器
D.il服避孕药
E.男用阴茎套