右心功能不全是
A.以夜间阵发性呼吸困难为主
B.可伴咳嗽、咯血
C.尿量正常,无浮肿
D.体循环静脉压增高而瘀血产生的临床表现
E.精神食欲正常,无消化道症状出现
参考答案:D
煤炭分三大类:()、()和()。
______, it will make a difference to the life of the people in the earthquake – stricken area.
A However the contribution is small B No matter small the contribution is
C However small the contribution is D No matter how the contribution is small