在制作面包或馒头时，我们需要利用（　　）

                                                                                                      登岳阳楼
                                                                                          昔闻洞庭水，今上岳阳楼。
                                                                                          吴楚东南坼，乾坤日夜浮。
                                                                                          亲朋无一字，老病有孤舟。
                                                                                          戎马关山北，凭轩涕泗流。