STM-1帧结构中最多可映射（）个PDH三次群信号。A.1 B.3 C.63

Once there was a man who liked to eat mangoes(芒果)．One day he decided to get the sweetest mango---the one from the very top of the tree．Mangoes that are exposed to the sun are the sweetest． 小题1:  

When he began to climb down，however, vthe man slipped and fell.

fortunately, he was able to catch a branch as he was falling．but he remained helplessly suspended(悬吊)from the tree．He called to the nearby villagers for help．Although the villagers brought their ladders，their ladders were too short．   小题2: 

After some time，a sage(圣贤)arrived，who was famous for solving

even the most difficult problems． 小题3: The sage remained silent for a

moment，and then，to everyone’s surprise，he picked up a stone and threw it at the hanging man．The mango lover began to shout，“Are you crazy? Do you want to kill me?”But the sage did not respond．Instead，he took another stone and threw it at the man．The man became furious and said，“If I could get down there，1 would beat you to death!”That’s what everybody wanted—for him to come down．

Then the sage picked up another stone and threw it even more forcefully

at the man．After that，the man hanging in the tree was determined to come down and take revenge． 小题4:  Upon safely reaching the ground the man

shouted，“Where is the wise man? He didn’t wait around for me to beat him!”

“But wait a minute，”a villager said．‘‘Our kindness did not save you．

小题5:  ” The mango lover thought for a moment and realized that he should

be thankful，not angry

A．They could do nothing to help him．

B．The sage is the only one who could help you．

C．People were curious to see what he would do．

D．Faced with this puzzle，the sage said nothing and left．E．With no way out he continued to wait for help in the mango tree．

F．So the man climbed to the top and managed to pick a few red mangoes．

G．He used all his skill and strength and managed to climb down safely

男性小儿，3岁。自幼蹲位排尿，阴茎发育小，向下弯曲， * * 口位于阴囊部，双侧阴囊未触及睾丸。下列哪项检查是诊断必需的()

A．血RT+CT，BT

B．胸X线片

C．血睾酮

D．血染色体

E．腹股沟区B型超声波检查

口唇无发绀，而四肢末梢出现发绀见于（）

A.慢性支气管炎

B.右心衰竭

C.左心衰竭

D.肠源性发绀

E.高铁血红蛋白血症

具有“通行诸气和运行水液”生理功能的腑是

A．胆
B．膀胱
C．胃
D．三焦

对肠道杆菌的共同特性叙述错误的是（）

A.均为革兰阴性杆菌

B.均为条件致病菌

C.鉴别依据生化反应

D.鉴别依据抗原构造

E.均含有菌体（O）抗原