下列关于统计报表的表述正确的有（） A.是自下而上逐级提供统计资料的调查方法 B.可

阅读短文，判断正误，对的(T)，错的(F)。

     A boy goes to study in Japan. He finds a part-time job in a restaurant. Many Japanese students also

 work there. Their job is washing dishes (餐具).It's an easy job, but the boss (老板) says: "You must

  wash every dish seven times."At most ,the student is careful. The boss is happy with him .After one

 month, the boy finds that the boss doesn't check (检查) very often. He thinks, "There's no difference

 between five times and seven times." So he just washes five times. He works very fast. The boss is even

 happier. One day, a Japanese student asks him why he can wash so fast The student tells him the secret.

 The Japanese student is surprised  (吃惊的)  but doesn't say anything.

      A few days later, the boss knows about it and fires  (解雇)  the boy. The boy goes to other

  restaurants, but all of them say, "Go away!  You are not honest (诚实的). We don't need you. " The

 boy  is sad, but he can do nothing now.

( ) 1. The boy works as a cook in a restaurant.

( ) 2. The boss wants the young man to wash the dishes five times.

( ) 3. A month later, the young man washes the dishes five times and he works very fast.

( ) 4. The Japanese student tells the boss about the young man's cheating.

( ) 5. The young man is not an honest person.

分光光度法的测量误差随透射率变化而存在极大值。

头部爱出汗，患软骨病及不爱在户外活动的孩子。一般是缺乏（）

A.维生素A

B.维生素C

C.维生素D

下图为我国部分地区一月等温线分布示意图。读图完成下列问题。

8℃等温线大致呈东西走向，其影响因素主要是（）

A．海岸线

B．纬度

C．地形

D．大气环流

着陆中过跑道头的速度越大，着陆距离（）.

A.越大

B.越小

C.与之无关