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【简答题】
求微分方程y'(zx+y2)=y满足初始条件y(1)=y(1)=1的特解.
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举一反三
【单选题】听力原文:M: Hi, Laura. Where are you heading? W: Hi, Peter. Put off to the gym. I've got to stay in shape, you know. M: What's the main reason you work out? For your health, or to look good? W: To be hone...
A.
He is an active sportsman.
B.
He is a keen cyclist.
C.
He enjoys playing baseball.
D.
He exercises regularly.
【单选题】听力原文:W: Hi, Mark! How is it going? M: Well, not so great. W: What's wrong? M: I've got a big problem with the poetry course that's required for my major. W: Is that all filled up? M: No, no, there is ...
A.
It's only open to poetry majors,
B.
It requires another class first.
C.
It's already full.
D.
It's only offered in the morning.
【判断题】刚体受同一平面内三个互不平行的力作用而平衡时,此三个力的作用线必汇交于一点。
A.
正确
B.
错误
【单选题】提出了“理念论”的古希腊哲学家是:( )
A.
柏拉图
B.
泰勒斯
C.
亚里士多德
D.
苏格拉底
【多选题】模式识别受体识别保守的模式(不同类别侵略者的特征)。模式识别受体中的Toll样受体家族(TLRs)中。
A.
Toll样受体4(TLR4)检测革兰氏阴性菌细胞外膜脂多糖LPS的存在。TLR4也能检测某些病毒所制造的蛋白质。
B.
TLR2专门识别革兰氏阴性菌“标签”蛋白质。
C.
TLR3识别许多病毒感染中产生的双链RNA。
D.
TLR9识别细菌DNA特有的非甲基化DNA二核苷酸CpG。
【判断题】若刚体受到同一平面内互不平行的三个力作用而平衡,那么这三个力的作用线必汇交于一点。
A.
正确
B.
错误
【单选题】Speaker A: Hi John, I've got a very good job offer. Speaker B: __________
A.
Congratulations!
B.
No wonder!
C.
Are you trying to impress me?
D.
You care too much about it.
【简答题】当刚体在同一平面内受作用线互不平行的三个力作用下而平衡,这三个力的( )必汇交于一点
【单选题】—Hi, Mike, I’ve got a present __________ you. —Oh, it’s really beautiful. Thank you very much.
A.
in
B.
on
C.
of
D.
for
【判断题】刚体受到同平面内互不平行的三个力作用而处于平衡状态,则此三力的作用线必汇交于一点。
A.
正确
B.
错误
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