Bergman征
参考答案:
膨胀性生长的输尿管肿瘤,由于肿瘤生长,其上下方输尿管逐渐扩张的征象,与结石梗阻仅有狭窄近段输尿管扩张表现不同。
阅读短文,判断下列句子正(T)误 (F) 。
Tom is not old, but he doesn't have much hair. His wife Linda has thick (厚的) and black hair.
They have a son. His name is Peter, and he is five years old.
One day, Tom is reading a book in his room. Peter looks at his father for a long time and says to his
mother, "Why does father have so little hair, Mum?" "He has little hair because he thinks a lot. He is a very
clever man," Linda says with a smile.
( ) 1. Tom is old, and he has much hair.
( ) 2. Linda does not have thick and black hair.
( ) 3. Tom has little hair because he thinks a lot.
( ) 4. Tom is a very clever man.
传输线缆的选择规定,报警信号传输线的耐压应不低于AC250V,应有足够的机械强度;铜芯绝缘导线、电缆芯线的最小截面积应满足下列()的要求。
A、穿管敷设的绝缘导线,线芯最小截面积不应小于1.00mm2
B、线槽内敷设的绝缘导线,线芯最小截面积不应小于0.75mm2
C、多芯电缆的单股线芯最小截面积不应小于0.50mm2
D、架空敷设的绝缘导线,线芯最小截面积不应小于2.00mm2