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【简答题】
The office has always been a place to get ahead. Unfortunately, It is also a place where a lot of natural resources start to fall behind. Take a look around next time you’re at work. See how many lights are left on when people leave. See how much paper is being wasted. How much electricity is being used to run computers that are left on. Look at how much water is being wasted in the rest-rooms. And how much solid waste is being thrown out in the rubbish cans. We bet it’s a lot. Now, here are some simple ways you can produce less waste at work. When you are at the copier, only make the copies you need. Use both sides of the paper when writing something less important. Turn off your lights when you leave. Use a lower watt bulb in your lamp. Drink your coffee or tea out of your mugs instead of single-use cups. Set up a recycling box for cans and one for bottles. And when you’re in the bathroom brushing your teeth or washing your face, don’t let the tap run. Remember, if we use fewer resources today, we’ll save more for tomorrow.
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【简答题】(本题12分)设全集 ,设集合 , , 求:(1) (2)
【单选题】关于综述论文题目部分的写作,描述不恰当的是
A.
题目应与正文内容相符
B.
一般不超过20个汉字
C.
主标题与副标题之间用冒号隔开
D.
英文不超过10个英文实词
E.
不应将原形词和缩略词同时列出
【单选题】关于综述论文题目部分的写作,描述不恰当的是
A.
题目应与正文内容相符
B.
一般不超过20个汉字
C.
尽量避免使用非公认的缩略词
D.
英文不超过10个英文实词
E.
可以将原形词和缩略语同时列出
【单选题】男性,38岁,10多年来反酸、嗳气、上腹部饱胀,伴有规律性上腹痛,空腹发作,夜间更重,进食可缓解。内镜检查,十二指肠球部可见直径约1cm的圆形溃疡。不符合该患者疾病的描述是
A.
易发生穿孔
B.
易发生出血
C.
易引起幽门梗阻
D.
易发生癌变
E.
可经不完全再生修复
【单选题】男性,38岁,10多年来,反酸、嗳气、上腹部疼痛,空腹发作,进食可缓解。经检查确诊为十二指肠溃疡,下面符合该病的描述为
A.
不易发生穿孔
B.
溃疡大小多在2em以上
C.
出血是常见合并症
D.
溃疡多在十二指肠降部
E.
容易发生癌变
【简答题】如图,梯形ABCD中,AD∥BC,AC、BD交于点O,AD=1,BC=3, 则S △AOD ︰S △BOC 等于(*) (A)1︰2   (B)1︰3   (C)4︰9   (D)1︰9
【单选题】男性,38岁,10多年来,反酸、嗳气、上腹部饱胀,伴有规律性上腹痛,空腹发作,夜间更重,进食可缓解。胃镜检查,十二指肠球部可见直径约1cm的圆形溃疡。不符合该患者疾病的描述是
A.
易发生穿孔
B.
易发生出血
C.
易引起幽门梗阻
D.
易发生癌变
E.
可经不完全再生修复
【单选题】有关系模式R(S, T, C, D, G),根据语义有如下函数依赖集:F=(S, C)→T,C→D,(S, C)→G, T→C。关系模式R的候选码( )。
A.
只有1个,为(S, C)
B.
只有1个,为(S, T)
C.
有2个,为(S, C)和(S, T)
D.
有2个,为(S, C)和(T)
【简答题】等差数列的前n项和为S n ,若S 2 =2,S 4 =10,则S 6 =____.
【单选题】劳动力供给的工资弹性Es计算公式为( )
A.
(ΔS/S)/(ΔW/W)
B.
(ΔW/W)/(ΔS/S)
C.
(ΔW/S)/(ΔS/W)
D.
(ΔS/W)/(ΔW/S)
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