问题 单项选择题

表示换算阐瓦压力的常用单位是()。

A.kPa

B.kg

C.kg/m

D.kN

答案

参考答案:D

辨析题

时下社会流行着这样的顺口溜:“读书苦读书累、读书还要交学费、不如参加黑社会,有吃有喝有地位” 你认为顺口溜说得有道理吗? 

                                                                                                                                                               

                                                                                                                                                               

                                                                                                                                                               

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

多项选择题