วิทยาศาสตร์ทางเลือก: ข้อมูล การสืบเสาะและโมเดล
ACT หัวข้อ 5 10:30 การบรรยายภาษาอังกฤษ · คำบรรยายภาษาอังกฤษ + 中文 ลอยตัวบนภาพ
บท
Transcript
A controlled comparison changes the proposed cause while holding alternative causes fixed.
工程选择须满足所有限制，温度最低未必合格。
An engineering design must satisfy every stated constraint.
厚度试验保持材料不变，重复试验不能消除混杂。
Repetition estimates variation; it does not undo a change of both material and thickness.
加厚后需重新测成本与耐久性。
Read this part of the original context. Retain it for the questions that follow.
阅读这部分完整原创材料，保留其中信息以回答后续问题。
Read this part of the original context. Retain it for the questions that follow.
阅读这部分完整原创材料，保留其中信息以回答后续问题。
Read this part of the original context. Retain it for the questions that follow.
阅读这部分完整原创材料，保留其中信息以回答后续问题。
Read this part of the original context. Retain it for the questions that follow.
阅读这部分完整原创材料，保留其中信息以回答后续问题。
Read this part of the original context. Retain it for the questions that follow.
阅读这部分完整原创材料，保留其中信息以回答后续问题。
Read this part of the original context. Retain it for the questions that follow.
阅读这部分完整原创材料，保留其中信息以回答后续问题。
Read this part of the original context. Retain it for the questions that follow.
阅读这部分完整原创材料，保留其中信息以回答后续问题。
Read this part of the original context. Retain it for the questions that follow.
阅读这部分完整原创材料，保留其中信息以回答后续问题。
Read this part of the original context. Retain it for the questions that follow.
阅读这部分完整原创材料，保留其中信息以回答后续问题。
Pause here and attempt the task before revealing the reasoning.
请先暂停独立作答，再查看推理。
Use the full context on the preceding pages.
结合前面各页的完整材料。
The control has a mean of 42 degrees Celsius, ranging from 41 to 43.
对照组平均四十二摄氏度，范围四十一到四十三度。
Sleeve A has a mean of 34, ranging from 33 to 35.
A 平均三十四度，范围三十三到三十五度。
Sleeve B has a mean of 31, ranging from 30 to 32.
B 平均三十一度，范围三十到三十二度。
A costs 4, which is within the limit of 5, and reaches at most 35 degrees, so it meets both requirements in these trials.
A 的成本是四，不超过上限五，最高只到三十五度，所以在这些试验中同时满足两项要求。
B's lower temperatures do not overcome its cost of 7, which is above 5.
B 温度更低，但成本七超过了五，这一点无法弥补。
This does not guarantee future durability or temperatures.
这并不保证今后的耐用性或温度。
Pause here and attempt the task before revealing the reasoning.
请先暂停独立作答，再查看推理。
Use the full context on the preceding pages.
结合前面各页的完整材料。
Thickness is changed and final temperature measured.
实验二改变的是厚度，测量的是最终温度。
Material, length, fit, starting temperature and operating conditions are controlled in Experiment 2.
材料、长度、贴合程度、起始温度和运行条件都受到控制。
The proposal changes material and thickness together, so either could explain a difference; repeats would not remove that confounding.
这个提议同时改变了材料和厚度，所以两者都可能造成差异；重复试验并不能消除这种混杂。
Pause here and attempt the task before revealing the reasoning.
请先暂停独立作答，再查看推理。
Use the full context on the preceding pages.
结合前面各页的完整材料。
Measure its actual cost and durability, while repeating matched final-temperature tests with the same material, length, fit, power, starting temperature and duration.
测量它实际的成本和耐用性，同时用相同的材料、长度、贴合程度、功率、起始温度和持续时间，重复做配对的最终温度测试。
The heavier sleeve's cost cannot be assumed unchanged.
不能假定较重套管的成本不变。
State acceptance limits before choosing, rather than deciding from cooling alone.
要在选择之前先定好合格标准，而不是只凭降温效果来决定。
Return to the task and explain why the method fits.
回到题目解释方法为何适用。
Original practice does not predict an official score. Complete required live or recorded evidence separately.
原创练习不预测官方分数；现场或录音证据需另行完成。
Pause and test yourself. Cover the worked answer, rebuild the answer to the last example in your own words, and name one condition that would change it before you check.
暂停一下，自我检测：遮住示范答案，用自己的话重做最后一个例子的答案，并在核对之前说出一个会改变结论的条件。