【判断题】根据定积分的定义可知:定积分的值不仅与被积分函数及积分区间有关,而且与积分变量的记号也有关,即
【单选题】听力原文:M: I'd love to come to your birthday party on Sunday. But my sister is arriving from London that day. F: That's no problem. The more the merrier. Q: What does the woman imply? (18)
A.
She thinks the man should stay with his sister at home.
B.
She invites the man and his sister to her party.
C.
She will go with the man to meet his sister.
D.
She will cancel her party.
【单选题】听力原文:M: I haven't seen your sister for a long time. Where is she? W: She's in M0nila studying fashion design. Q: What does the woman mean? (18)
A.
Her sister is a fashionable woman.
B.
Her sister is designing a dress.
C.
Her sister is studying Spanish.
D.
Her sister is in the Philippines.
【判断题】发电机皮带安装时要检查它松紧度,松紧要合适,否定它影响发电机工作
【单选题】__________ is your sister? She is 18 years old. [ ]
【单选题】力矩分配法计算中,需要具体计算才知道数值的量是( ):
【简答题】Jim and Lucy are brother and sister. Jim is 18 and Lucy is 16. They are students. Winter vacation is coming and they want to find something *to do during the winter vacation. Now they’re reading the n...