此试题出现在
骨盆测量的时间（）
相对密实度是评价碾压混凝土压实质量的指标，建筑物外部混凝土不小于（）；内部混凝土不得于（），抗冻抗渗检验合格率不低于（）
Passage2 Questions 6 to 10 are based on the following passage. Salt is as necessary to life as water. In many areas of Africa people once drank the urine（尿）of animals because they had no other source of salt. Without salt, human beings die. The human body demands that the amount of salt in the blood always stay the same. When the body does not get enough salt, it protects itself by letting less salt leave the body in. urine and sweat. But it cannot reduce this output to zero. Some salt is always escaping. On a completely saltless diet, like that of some people in Africa, the body steadily loses small amounts of salt through the kidneys（肾） and sweat glands(腺). It then tries to adjust to this loss by speeding up its secretion(分泌) of water. (78) In this way, the body attempts to keep the amount of salt in the blood at the necessary level. The result is a slow drying up of body and, finally, death. The person dies of thirst. In cases where there is little or no water to drink, the body tries to do the opposite thing.Again, it must keep the salt level in the blood constant. Because it has little water, it attempts to stop water from leaving the body and to increase its secretion of. salt. But, as with the escaping salt, it cannot be completely successful. Some water still leaves and the person eventually dies of thirst. In short, the body's normal needs for salt and for water are both parts of the same important need to keep the salt level in the blood constant.8 Which of the following statements is NOT the result of a lack of salt in the body?
体内CO2分压最高的部位是（）
下列关于骨巨细胞瘤的叙述，错误的是（ ）。
产品的有形部分所组成的是产品的（）。
关于各种抗结核药物的相关不良反应，叙述正确的是（）
会计人员的自我修养的内容是什么？
现代化交通运输主要包括铁路、水路、公路、航空和管道五种运输方式。
误服有机磷中毒的途径是（）
暂无相关推荐~