搜题请搜索小程序“爱下问搜题”
问题 单项选择题

SSFDR（固态飞行数据记录器）的优点是（）。

A.存储量大，记录速率/记录时间可更改，便于存取，可靠性高。

B.存储量大，记录速度快，取数方便。

C.存储量大，便于数据处理

D.记录速度快，记录时间长，可靠性高，便于数据处理。

答案

参考答案：A

完形填空

Jaya is sixteen, but he doesn’t go to school. He studies medicine at New York University in a class of twenty-year-olds. Jaya was born in Madras in India but now lives in a house in New York with his mother, father and brother. They can all speak English. His father is a doctor.

Jaya was different from a very young age. He could count before he could say “Mummy” or “Daddy”. He could answer questions on calculus (微积分) when he was five and did algebra(几何) when he was eight. Now he studies from 8:15am to 4: 00am every day at the university. Then he studies at home with his father from 6:30 to 10:00 every evening. Jaya doesn’t have any friends. He thinks other children can’t understand him. He never goes out in the evenings, but he sometimes watches TV. He says, “I live for one thing — I want to be a doctor before I am nineteen.”

小题1:Is Jaya very clever?

                                        .

小题2:Where was Jaya born?

                                         .

小题3:Who teaches him medicine at home?

                                          .

小题4:What was Jaya very interested in when he was very young, math or medicine?

                                           .

小题5:Why doesn’t Jaya make friends?

                                           .
查看答案
问答题 简答题

离体培养条件下，茎、芽和根的再生方式大致有几种？
查看答案