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【单选题】
在主量子数为4的电子层中,能容纳的最多电子数是A.
18
B.
24
C.
32
D.
36
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皮皮学刷刷变学霸
举一反三
【单选题】The two-stroke cycle begins with the piston coming up from the bottom of its stroke, with ___ in the sides of the cylinder being opened.
A.
scavenge ports
B.
inlet valves
C.
air starting valves
D.
exhaust valves
【简答题】But after a while, life itself begins to feel __________. 然而,一段时间之后,生活本身就显得不那么真实了。
【简答题】After a while, life itself began to feel unreal. I start to feel as though I've become one with my ___1____, taking ____2_____in,______3____ them back out, just another _____4___ in the Net.
【单选题】The two-stroke cycle begins with the piston coming up from the bottom of its stroke, with scavenge ports in the sides of the cylinder being _____.
A.
shut
B.
closing
C.
opened
D.
closed
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