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【简答题】
熔断器在电动机的电路中起 保护作用。
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【单选题】The muscles of a fossilized animal can sometimes be reconstructed because______.
A.
they were preserved with the rest of the animal
B.
they were lodged inside the animal's skull
C.
they were hardened parts of the animal's body
D.
they were attached to the animal's skeleton
【单选题】Newly-found fossilized tracks in Alaska proved that dinosaurs' migration between Asia and North America took place ______.
A.
much earlier than experts previously thought
B.
much later than experts previously thought
C.
after Asia became an independent continent
D.
sometime around 25 million years ago
【简答题】vt. 赚得,获得,博得
【单选题】According to the text, the soft part of fossilized animals
A.
can always be accurately identified.
B.
have usually left some traces.
C.
can usually be reconstructed.
D.
have always vanished without any trace.
【单选题】The muscles of a fossilized animal can sometimes be reconstructed because
A.
they were preserved with the present relatives of the animal.
B.
they were lodged inside the animal’s skull.
C.
they were hardened parts of the animal’s body.
D.
they were attached to the animal’s skeleton.
【单选题】货品从进入分拣系统直至传送到指定的分配位置为止,都是依照指令靠自动装置来完成分拣作业的一种分拣方式是
A.
人工拣选法
B.
分类拣选法
C.
机械拣选法
D.
自动拣选法
【简答题】写出语句的运行结果: li = ["apple", "peach", "banana", "pear"] (1)','.join(li) (2) '.'.join(li)
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