为消除压电传感器电缆分布电容变化对输出灵敏度的影响,可采用()。
A.电压放大器
B.电荷放大器
C.前置放大器
参考答案:B
Your niece is very strict and ______ worth teaching, but your nephew is not. Look, he is now ______ asleep in class.
A.well; fast
B.much; very
C.very; fast
D.well; very
瘿痈表证明显者,用方为()
A.归脾汤
B.丹栀逍遥散
C.龙胆泻肝汤
D.左归丸合小金片
E.右归丸合小金片