问题 判断题

停止加热时间大于2小时,集气管压力通常保持比正常大20~40Pa。

答案

参考答案:对

问答题

2006年是中国人民抗日战争胜利61周年,请回答下列问题:

(1)全国性抗日战争爆发的标志是什么?

                                                                                                                                                            

(2)说出抗日战争中中国军队取得胜利的战役。

                                                                                                                                                            

(3)试用具体的事例对日本侵略者在中国犯下的罪恶进行谴责。

                                                                                                                                                             

                                                                                                                                                             

选择题