将管子接头外壁距离压至所需值后，试样拉伸部位的裂纹长度为( )时，则认为压扁试验合格。
A．不超过3mm
B．4mm
C．5mm
D．6mm
参考答案：A
The WTO cannot live up to its name ______ it does not include a country that is home to
one fifth of mankind. [ ]
A. as long as
B. while
C. if
D. even though
C125M33-2RH压缩机开机前必须检查一级导淋在（）位置。
A.打开
B.半开
C.关闭
D.不用检查
