下图所示的实验,能达到实验目的的是 [ ]
A.验证化学能转化为电能
B.证明温度对平衡移动的影响
C.验证铁发生析氢腐蚀
D.验证AgCl 溶解度大于Ag2S
BD
— Excuse me, could you tell me the way to the British Museum?
— Sorry, I'm a stranger here.
— _____. [ ]
A. Thanks, anyway
B. It doesn't matter
C. Never mind
D. No problem
良性淋巴结的声像图特点是()①淋巴结均匀性肿大,长(L)/宽(S)>2②淋巴结分叶状增大,长(L)/宽(S)<2③呈椭圆形,被膜回声强而完整④被膜回声强而不完整⑤血流丰富,分布规律呈高速低阻,RI<0.5⑥血流丰富,分布不规则呈高速高阻,R1>0.7
A.①③⑤
B.②④⑥
C.①④⑥
D.②③⑤
E.①③④