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【单选题】
患者女,52岁,风湿性心脏瓣膜病, 主动脉瓣 狭窄十余年,三天前受凉后出现咳嗽,咳黄色黏痰,伴发热、胸闷、心悸、气短,上三层楼梯需中间休息五分钟,自服感冒药后未见改善,急诊以“风湿性心脏瓣膜病、心力衰竭、肺部感染”收入院。 引起该患者发生心力衰竭的基本病因A.
原发性的心肌损害
B.
右心房代偿性扩张
C.
心室后负荷过重
D.
心室舒张充盈受限
E.
心室前负荷过重
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举一反三
【单选题】What type of sentence is 'The question of whether war is inevitable is one which has concerned many great writers.'?
A.
A simple sentence.
B.
A coordinate sentence.
C.
A complex sentence.
D.
None of the above.
【单选题】In what way is salinization a serious problem for agriculture?
A.
Soils with high salt concentrations are destructive to crop plants．
B.
Salinization can lead to soil compaction or to LOSS of soil cover．
C.
Excessive amounts of water are required to prevent salinization．
D.
Adding salt to fertilizer raises the operating costs of agriculture．
【简答题】已知一个正四棱锥 S-ABCD 的高 SO 和底面边长都是 4 ,求它的侧面积和体积.
【简答题】下列项目中不属于应付职工薪酬核算内容的是（ ）。
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