十进制数32转换成无符号二进制整数是______。A．100000 B．100100

病例摘要：男性，30岁。餐后突发右上腹及剑突下痛，放射到右肩及后背部，2小时后疼痛剧烈，伴恶心，并吐出所进食物，仍不缓解，急诊就医。数年"胃病"史及胆石症病史，间有胆绞痛发作。查体：痛苦病容。体温37.2℃，呼吸28次/分，浅快，律齐，全腹胀，上腹肌紧张，压痛反跳痛（+），移动性浊音（±），WBC12×10⁹/L。Hb125g/L，尿淀粉酶400U/L（温氏法正常值32U）。

应该考虑以下的初步诊断，除了（）。

A.胃十二指肠溃疡穿孔

B.急性胆囊炎

C.急性肠梗阻

D.急性胰腺炎

E.急性胃肠炎

在“用托盘天平称物体的质量”的实验中，下列操作错误的是 [ ]

A．使用天平时，应将天平放在水平桌面上

B．调节横梁平衡时，应先将游码移至横梁标尺左端“0”刻度线上

C．称量时右盘应放置待称量的物体，左盘放置砝码

D．观察到指针在正中刻度线或在做左右幅度相等的摆动，可认为天平横梁已平衡

A nobleman and a merchant once met in an inn. For their lunch they both ordered soup. When it was brought, the nobleman took a spoonful, but the soup was so hot that he burned his mouth and tears came to his eyes, The merchant asked him why he was weeping. The nobleman was ashamed to admit that he had burned his mouth and answered, “Sir, I once had a brother who committed a great crime , for which he was hanged. I was thinking of his death, and that made me weep.” The merchant believed this story and began to eat his soup. He too burned his mouth, so that he had tears in his eyes. The nobleman noticed it and asked the merchant, “Sir, why do you weep?” The merchant, who now saw that the nobleman had deceived (欺骗) him, answered, “My lord(="master)," I am weeping because you were not hanged together with your brother.”

小题1:This story teaches us ______.

A．not to eat in inns

B．not to eat soup that is too hot

C．to cry when we burn our mouth

D．not to believe everything you hear小题2:The nobleman did not tell the truth because he ______.

A．was a nobleman

B．felt ashamed

C．was in an inn

D．was angry小题3:It is probable that the nobleman ______.

A．had no brother who was hanged

B．had a very good brother

C．knew the soup was too hot

D．had never eaten soup小题4: The merchant’s answer showed that he ______.

A．was very happy

B．believed the nobleman

C．was angry with the nobleman

D．had kind heart

镁在空气中燃烧时不仅与氧气反应生成氧化镁，而且还有部分镁与氮气化合生成氮化镁（Mg₃N₂），由此可推知，12g镁在空气中燃烧后所得产物的质量为（　　）

A．等于20g

B．小于20g

C．大于20g

D．无法确定

按照全国开展的第二次土地利用现状调查采用的土地利用分类，田坎是指宽度大于或等于2m(北方)或大于或等于1m(南方)的地坎。其上一级分类属于( )。

A．耕地
B．公共管理与公共服务用地
C．交通运输用地
D．其他用地