问题 单项选择题

某M2级2kg的增铊,质量允差为±300mg,若用最大秤量为5kg的普通标尺天平检定该增铊,其所用天平示值的综合极限误差应不大于()。

A.±100mg

B.±200mg

C.±300mg

D.±150mg

答案

参考答案:A

单项选择题
写作题

假设你是李华,你的英国笔友Mike给你发来E-mail,询问你今年暑假的打算。请你根据以下提示,从中选取一个或两个方面,结合自己的实际,给Mike写电子邮件。

提示:1. 学开车拿驾照;

2. 参加英语培训课程;

3. 去深圳观看第26届世界大学生运动会;

4. 去北京游览名胜。

注意:1. 词数120左右,开头、结尾已为你写好(不计入所写词数);

2. 可适当增加细节,以使行文连贯。

3. 参考词汇:the 26th World Universiade 第26届世界大学生运动会

Dear Mike,

As time goes by, my college entrance exam is approaching,                           

                                                                             

                                                                             

                                                                             

                                                                             

                                                                             

                                                                             

                                                                             

                                                                             

                                                                             

                                                                             

That is the plan for my vacation. I am eagerly looking forward to it. What about your summer vacation this year?

Yours,

Li Hua