在实际工作中,NPN型三极管和PNP型三极管可直接替换。
参考答案:错
根据所给提示及句意完成单词的拼写。
1. —How many m _______ are there in an hour?
—There are 60.
2. Do these clips m _______ her favorite T-shirt?
3. Hello! Daniel. Are you s _______ at the moment?
4. How much is this _______ (双) of sports shoes?
5. The jeans don't _______(合身) me well.
患者,女.18岁。2周前患扁桃体炎,近日心悸,气短,发热,出汗,踝、膝关节游走性疼痛。查体:心率110次/分,第1心音减弱,上肢内侧皮肤有环形红斑。应首先考虑的是()
A.病毒性心肌炎
B.类风湿性关节炎
C.风湿热
D.亚急性感染性心内膜炎
E.系统性红斑狼疮