()位于胸膜腔内。
A.左肺
B.右肺
C.两者均是
D.两者均否
参考答案:C
It is quite impossible for _____ people to do _____ work in a day. [ ]
A. such little, such much
B. so few, so much
C. such few, so much
D. so few, so little
钢筋()是将处于常温的钢筋以强力拉拔的方式,通过一个比被拉钢筋直径小一点的特质模孔,使钢筋在拉应力和压应力的作用下被强行变细的过程。
A.冷拉
B.冷拔
C.冷弯
D.冷轧