光纤柱中包含的信号光纤和激光供能光纤不宜采用光纤转接设备,并应有足够的()数量。
参考答案:备用芯
患者,女,38岁。双下肢对称性紫癜。实验室检查:束臂试验(+),血块退缩良好,血小板计数正常,凝血时间6min。患者诊断为().
A.血友病
B.过敏性紫癜
C.特发性血小板减少性紫癜
D.维生素C缺乏性紫癜
E.血小板无力症
根据括号内汉语提示,完成句子。(每空一词)
1. Zhang Yining is the _______(获胜者) in the table tennis game.
2 .Which do you prefer, reading or _______ (绘画)?
3. Dr. White _______(发明)a kind of new medicine last year.
4. The burglar (盗贼) got in_______ (从,通过) the window.
5. If I have a (机会),I must teach myself English.
6. Getting up early is a good _______ (习惯).