I remember during the first several months after my grandmother's passing away, my mother __________ stare our family photo for hours.
A:will
B:could
C:would
D:might
欲用伏安法测定一段阻值为5Ω左右的金属导线的电阻,要求测量结果尽量准确并且电压从0开始调节,备有以下器材:
A.电池组(3V、1Ω)
B.电流表(0﹣3A、0.0125Ω)
C.电流表(0﹣0.6A、0.125Ω)
D.电压表(0~3V、3kΩ)
E.电压表(0~15V、15kΩ)
F.滑动变阻器(0~20Ω、1A)
G.滑动变阻器(0~200Ω、0.3A)
H.开关、导线
对当前世界格局新变化认识不正确的是( )
下列有关免疫失调病的说法正确的是: