左室舒张期负荷突然明显加重见于()
A.二尖瓣狭窄伴快速房颤:
B.阵发性室上性心动过速
C.急性广泛心肌梗死
D.输液过多过快
E.肺动脉高压
参考答案:D
Chinese people will learn from other countries with different political systems and at varying
development stages and ________ their differences.[ ]
A. permit
B. tolerate
C. associate
D. appreciate
经济中记载的”挑选有才能的人担任千夫长,百夫长---“体现了管理的()原则.
A.例外
B.分级
C.用人
D.间接控制