FET is another kind of semiconductor device with positive control effect. It has the advantages of small size, simple process and easy control of device characteristics. It is the main active device for manufacturing LSI at present. Above statement is （ ）.
A. True
B. Fault
Can't judge
D.
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Generally speaking, the input resistance of FET is much greater than that of triode. Above statement is （ ）.
A. True
B. Fault
Can't judge
D.
大量心包积液发生心脏压塞时,能快速解除症状的措施是
A. 卧床休息
B. 呋塞米静注
C. 地塞米松静注
D. 心包穿刺引流
E. 头孢克肟静滴
急性纤维蛋白性心包炎最主要的症状是
A. 心前区疼痛
B. 呼吸困难
C. 发热乏力
D. 吞咽困难
E. 声音嘶哑
缩窄性心包炎早期最典型的症状是
A. 劳力性呼吸困难
B. 食欲不振、腹胀
C. 胸痛
D. 心悸
E. 疲乏
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