对取消焊工资格的焊工所焊的焊缝应进行()无损探伤检验。
A.20%
B.50%
C.100%
参考答案:C
男性,67岁。患高血压心脏病10年,因劳累突然出现呼吸困难,不能平卧,急查血压80/60mmHg,心率130次/分,双肺底大量水泡音,心界向左扩大,心率130分/分,心音低钝,呈奔马律。
最可能的诊断().
A.支气管哮喘
B.自发性气胸
C.肺栓塞
D.急性左心衰
E.急性心包炎
After___seemed a hopeless wait, four coal-miners trapped in the mine for 125 hours were finally rescued in Heilongjiang Province.
A.when
B.that
C.it
D.what