问题
单项选择题
电源+5输出的最大偏差值范围是（）
A.+10%
B.+3%
C.+15%
D.+5%
答案
参考答案：D
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电源+5输出的最大偏差值范围是（）
A.+10%
B.+3%
C.+15%
D.+5%
参考答案：D
| 补全对话。根据对话内容选择框格内选项填人空白处，使对话意思完整、通顺。 | |
| A: Hi, Maria. How are you today? B: I'm feeling really bad. A: 1_____ B: Because I didn't pass the math exam. A: 2_____ B: What should I do? A: 3_____ B: I did, but sometimes I can't work out the math problems. A: You may ask your classmates when you need help. B: Certainly. 4_____. A: Try your best. You'll do well in it some day. B: 5_____ | |
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