职业教育应具有相对独立和相对完整的结构体系、运作管理机制和评价考核标准。

某同学利用图甲所示电路，探究了电源在不同负载下的输出功率。

（1）所得实验数据如下表，请在直角坐标系上画出U-I图象。

（2）根据所画U-I图象，可求得电流I=0.20 A时电源的输出功率为____W。（保留两位有效数字）

（3）实验完成后，该同学对实验方案进行了反思，认为按图甲电路进行实验操作的过程中存在安全隐患，并对电路重新设计。在图乙所示的电路中，你认为既能测出电源在不同负载下的输出功率，又能消除安全隐患的是____。(R_x阻值未知)

健康女性，处于站立位置时，正常情况下，其骨盆倾斜度应该是()。

A．40°

B．50°

C．60°

D．70°

E．80°

短文填空

One day, a poor boy was selling goods from door to door to pay for his tuition fees (学费). He was hungry. He d___1____ he would ask for a meal at the next house. However, he lost heart w___2____ a lovely young woman opened the door. He asked for a drink of water and the woman agreed. She thought he looked hungry, so she b___3____ him a large glass of milk. He drank it slowly, and then asked, “How much do I owe (欠) you ?” “You owe me nothing, ” she r___4___. “Mother has taught us never to accept pay for a kindness.” He said, “Then I thank you from my heart.”

Years later, that young woman become seriously i__5___.The local doctors all f__6___ to cure her. They finally sent her to the big city, where they called in specialists (专家) to study her rare disease. Dr. Howard, who o__7__ got a large glass of milk and a meal from the young woman, was called in for the treatment. He went down the hall of the hospital to her room when he heard the name of the town she came from. D__8____ in his doctor’s uniform, he went in to see her. He recognized (认出) her quickly. He made up his mind to do his best to save her life and pay special a__9_____ to the case. After a long struggle, the battle (战役) was won. The woman n__10____ these words when she paid the pill: “ Paid in full with one glass of milk… Dr. Howard Kelly..”

在“工于医者未必工于文”中，“工”之义为（）

A.精巧

B.擅长

C.精通

D.工整

什么是视觉识别？试举一例。