男,50岁。行肾移植,急性排斥反应多见于移植后()
A.1~2个月
B.3~4周内
C.1~2周内
D.10天内
E.48小时内
参考答案:C
适用于高压钢管焊接的是( )。
A.V形坡口
B.I形坡口
C.U形坡口
D.T形坡口
33._______the activities might seem childish, in reality they require a lot of strength and determination.
A.When
B.As
C.While
D.Once