问题
单项选择题
暴风客热发病的主要部位是（）
A.胞睑
B.两眦
C.黑睛
D.白睛
E.瞳神
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
暴风客热发病的主要部位是（）
A.胞睑
B.两眦
C.黑睛
D.白睛
E.瞳神
参考答案：D
Jack was a big, fine figure of a policeman, and always had a lot of work to do. One day, he was too busy to have enough lunch and had to keep on working. He walked up and down Market Street, keeping a eye on things and getting hungrier and hungrier. He passed Tony’s store. “Would you like to have a banana, Jack?” greeted Tony. But Jack his head and said, “No, thank you.” He never ate when he was at . Then he went past another shop that was full of cheeses, cold meats, potato chips, and so on. And when the shopkeeper offered him a pack of sausage, he again. So it went, all day long. The man went past the sweet store, the bakery, the peanut man and the toffee-apple man, saying, “No, thank you, not on duty.” He got much . At last, his day ended, and he immediately ran back home. He went the stairs and into the kitchen. “You must be hungry, man!” cried his wife, who had prepared well for the dinner, “ Sit at the and eat!” Jack sat down immediately and began to enjoy the meal. It seemed that it was the most delicious and biggest meal he had ever had. He said, “Thank you, my dear.” “It’s always a pleasure to for you,” his wife replied.
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在“用单摆测重力加速度”的实验中：
（1）下面所给器材中，选用哪些器材较好，请将所选用器材前字母依次填在指定位置
A．长1m的左右的细线
B．长30cm左右的细线
C．直径2cm的铅球
D．直径2cm的木球 E．秒表 F．时钟 G．最小刻度是厘米的直尺 H．最小刻度是毫米的直尺所选器材有：
（2）某同学测出了n次全振动的时间为t，测得摆线长度为l，摆球的直径为d，用上述物理量的符号写出测重力加速度的一般表达式为g=
（3）宇航员在某星球上也利用单摆测该星球表面处的重力加速度。实验测得了5种不同摆长情况下单摆的振动周期，记录如下：
| l(m) | 0.4 | 0.6 | 0.8 | 1.0 | 1.2 |
| T(s) | 1.01 | 1.23 | 1.46 | 1.56 | 1.73 |
| T2(s2) | 1.02 | 1.51 | 2.13 | 2.43 | 3.00 |
）