皮皮学，免费搜题
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【单选题】
病室通风的目的,下列何项不妥A.
可减少汗液的蒸发和热的消散使病室空气新鲜
B.
使患者舒适愉快
C.
降低空气中微生物的浓度
D.
降低二氧化碳的浓度
E.
可刺激皮肤的血液循环
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【简答题】#include unsigned char code dm[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff}; void delay(){ unsigned int i=0; for(i=0;i<3000;i++){ ; } } void main(){ while(1){ P1=0XFE; if(P1!=0XFe){ dela...
【简答题】阅读理解 Topping the class academically was certainly an advantage. Studying was a breeze for Nigel. The reward was certainly incomparable to the little effort that he had to put it. It began when he was ...
【单选题】According to Nigel, inexperience travelers are likely to make the following mistakes except ______.
A.
booking on less popular flights
B.
buying tickets at full price
C.
carrying excessive luggage
D.
planning long business trips
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【简答题】10. 在原子中对于第 n 电子层,若它作为原子的最外层,则容纳的电子数最多与 (n-1) 层的相
同;当它作为次外层,则其容纳的电子数比 (n+1) 层上电子数最多能多 10 个,则第 n 层为 ( ) A.L 层 B.M 层 C.N 层 D. 任意层
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