慢性肺源性心脏病并发症下列哪一项不常见()
A.肺性脑病
B.上消化道出血
C.酸碱平衡失调及电解质紊乱
D.休克
E.肺梗死
参考答案：E
He hasn't slept at all for three days. _____ he is tired out. [ ]
A. There is no point
B. There is no need
C. It is no wonder
D. It is no way
TB/T2340—2000标准规定，钢轨超声波探伤仪距离幅度特性的测试点不应少于（）。
