搜题请搜索小程序“爱下问搜题”
问题 单项选择题

银汞合金中哪一类型的银汞在充填时需采用"轻拍式"的力量（）。

A.切割型

B.圆球型

C.混合型

D.高铜型

E.低铜型

答案

参考答案：B

句型转换

句型转换。

l. Jenny was late for school yesterday.(改为一般疑问句)

                                                                    

2. He can work out the math problem.(改为否定句)

                                                                    

3. Let's play games together.(改为否定句)

                                                                    

4. They have lived here for many years.(就画线部分提问)

                                                                    

5. His brother usually goes to school by underground.(就画线部分提问)

                                                                    

6. I could swim when l was eight.(改为同义句)

    I could swim ______ eight.
查看答案
单项选择题 B1型题

产生IL-4的是（）

A.Th1

B.Th2

C.CTL

D.NK

E.Mφ
查看答案