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问题 单项选择题

便携式测试台开机后发出（），显示屏依次显示测试台的软件版本信息和当前接收频率。

A、频率

B、报警

C、声音

D、提示音

答案

参考答案：D

选择题
猜一猜，选一选。
( ) 1. my mother's sister   
( ) 2. my father's brother
( ) 3. my aunt's son       
( ) 4. my father's father       
( ) 5. my aunt's daughter		A. cousin       
B. aunt       
C. uncle     
D. grandfather                                                                                  
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单项选择题

Which of the following statements relating to assumptions is inaccurate

A) They are factors which are considered to be true, real or certain.
B) They affect all aspects of project planning.
C) They are progressively elaborated.
D) They limit the project team’s options.
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