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举一反三
【单选题】The economist Irving Fisher, after whom the Fisher effect is named, explained why interest rates ________ as the expected rate of inflation ________, everything else held constant.
A.
rise; increases
B.
rise; stabilizes
C.
fall; stabilizes
D.
fall; increases
【单选题】不符合气管肿瘤的临床X线表现是（）
A.
有明显的喘鸣音，严重者呼吸困难，有咳嗽咯血等，气管下1／3肿瘤会一侧支气管阻塞，接近声门有声嘶
B.
胸片可无阳性所见或仅有两侧阻塞性肺气肿或一侧肺不张
C.
肺纹理增强或囊状透明阴影，并可见杵状指
D.
侧位高千伏摄影，可显示凸出气管腔内肿块阴影
E.
体层摄影可见气管腔内有肿块影，良性者边缘光滑，恶性者可成为菜花样不规则，基底宽，使气管成环形狭窄