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【判断题】
在消除应力退火中,应力的消除主要是依靠加热或冷却过程中钢材组织发生变化和产生塑性变形带来的应力松驰实现的。
A.
正确
B.
错误
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举一反三
【单选题】Express your appreciation in ___ way, but do not thank the reader in advance.
A.
any
B.
the
C.
some
D.
some other
【简答题】Thank you is to express your _________.
【单选题】2) According to the passage, which of the following statements can NOT describe the practice of saying “thank you” in American culture? A) “Thank you” is a common expression even between close relat...
A.
“Thank you” is a common expression even between close relatives.
B.
 Americans often express thanks for the small favors that others have done them
C.
 It is unusual to say “thank you” between husband and wife.
D.
 Americans thank people all day long.
【判断题】实验大楼出现火情时千万不要乘坐电梯,因为电梯可能因停电或失控,同时又因“烟囱效应”,电梯井常常成为浓烟的流通道。
A.
正确
B.
错误
【单选题】According to Peter Post, by writing a thank-you card______.
A.
you express that you are obeying rules of etiquette
B.
you show that you are caring for other people
C.
you acknowledge that you have a relationship with others
D.
you display your gratitude for what people have done for you
【单选题】细胞衰老和凋亡对维持个体的正常生长发育及生命活动具有重要意义。下列叙述错误的是()。
A.
正常的细胞会随着分裂次数的增加而衰老
B.
效应细胞毒性T细胞可诱导靶细胞发生凋亡
C.
受遗传机制决定的细胞程序性死亡属于细胞凋亡
D.
衰老细胞中的线粒体数量随年龄增大而减少,细胞体积随年龄增大而增大
【判断题】At the beginning of a thank-you letter, you should express appreciation for their help and support.()
A.
正确
B.
错误
【单选题】细胞衰老和凋亡对维持个体的正常生长和发育及生命活动具有重要意义。下列叙述错误的是()
A.
细胞普遍衰老会导致个体衰老
B.
效应T细胞可诱导靶细胞发生凋亡
C.
细胞凋亡是各种不利因素引起的细胞死亡
D.
衰老细胞内染色质固缩影响DNA复制和转录
【单选题】我国《民用航空法》规定,下列不属于事件的是( )。
A.
飞机坠毁
B.
空中颠簸造成乘客受伤
C.
乘客在飞机上被劫持者杀害
D.
乘客服用过量药品死亡
【单选题】It's polite _______ 'thank you' . [     ]
A.
to say
B.
say
C.
saying
D.
to express
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