螺杆式压缩机相比往复式压缩机它的单位排气量体积、重量、占地面积以及排气脉动().
A.小
B.大
C.相同
参考答案:A
看图,根据已给的首字母,将句子补充完整。
What can you see in the picture?
1. I can see the s____________. (太阳)
2. I can see the s____________. (小溪)
3. I can see some b____________s. (小鸟)
4. I can see some m____________s. (山)
5. I can see a b____________. (桥)
6. I can see a l____________. (湖)
7. I can see some t____________s. (树)
8. I can see a r____________. (彩虹)
某患者自肩以下左侧深感觉障碍,右侧痛觉温度觉障碍,左上肢为周围性瘫痪,左下肢为中枢性瘫痪,其病变部位在
A.右侧延髓
B.左侧脊髓上颈段(颈2~4)
C.左侧脊髓颈膨大
D.右侧脊髓颈膨大
E.右侧脊髓胸段