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【判断题】
着火过早,容易烧坏燃烧器;着火太迟,燃烧时间缩短,增大不完全燃烧损失,所以希望煤粉气流在离开燃烧器喷口不远处及时稳定的着火。A.
正确
B.
错误
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反馈参考答案：
举一反三
【判断题】There are different types of coronaviruses that cause respiratory symptoms.
A.
正确
B.
错误
【多选题】There are 4 types of invalid contracts:__,__,__,__.
A.
Void contract
B.
Voidable contract
C.
Unenforceable contract
D.
Illegal contract
【判断题】There are 4 types of Contrast Questions in Part 3 of IELTS Speaking, which are "men vs. women", "elderly vs. young", "present vs. past" and "East vs. West".
A.
正确
B.
错误
【简答题】There are 4 types of market segmentation which are most commonly used. They are: demographic segmentation, behavioral segmentation, ___________ segmentation and Geographic segmentation.
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