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【单选题】New Technique Promises Earlier Cancer Detection A new technique could revolutionize the early detection of cancer, giving sufferers a greater chance of beating the disease, American scientists said. R...
A.
before
B.
after
C.
although
D.
near
【单选题】卧式重力式分离器的主要结构部件有连通管、（）、积液包、进出口管等.
A.
管体、排污管、液压计
B.
球体、排污管、差压计
C.
椭圆管、排污管、温度计
D.
筒体、排污管、温度计