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题目：
单选题
A保护半月板
B促进韧带修复、增加关节稳定性
C促进骨折愈合
D减轻关节滑膜增生
E减少关节软骨磨损
答案：
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水箱的作用：贮水；升压；减压；（）。
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录制合同
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在下列联轴器中要求两轴严格精确对中的（）。
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Choose the best words into the sentences. Sudan is the only male northern white rhino (犀牛) left in the world. That (mean) Sudan, 42, is the last hope for avoiding extinction. (protect) him, officials have placed him under 24-hour armed guard at the OI Pejeta Conservancy in central Kenya. Sudan lives there two female northern white rhinos, Fatu and Najin. Northern white rhinos, can weigh up to 5,000 pounds, were once plentiful across northern and central Africa. (hunter) have killed thousands of rhinos because of high demand for the animals，horns (角). Rhino horns, believed to have medical effects, are used in (tradition) Asian medicines. More than 1,000 rhinos (kill) in 2014 in South Africa alone and fifty-four rhinos in Kenya, which has a much (small) population. Sudan, Fatu, and Najin have had their horns (remove) so that they will not be hunted. People hope Sudan and one of the females will be able to have a baby. Sudan is very old, but scientists will not give up hope.
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配制抗坏血酸注射液：在配制容器中，加配制量80%的注射用水，通二氧化碳饱和，加维生素C溶解后，分次缓缓加入碳酸氢钠，搅拌使完全溶解，加入预先配制好的依地酸二钠溶液和亚硫酸氢钠溶液，调节药液PH6.0~6.2，添加以C02饱和的注射用水至足量，滤过，灭菌。下面关于注射液调节PH值的目的，哪一条是错误的（）
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某个大型商场现有员工100多人，由于工资偏低人员流动性特别大。由于商场效益不错，物流量特别大。现在货物的流进流出主要依靠人工统计。现有车辆10多部主要用于城区以及周边地区的货物配送。老板是一位30出头的年轻人，对新鲜事物比较感兴趣。最近由于人手比较紧又在招收新人，请根据其情况推荐几款比较合适的业务。
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虚烦不寐，咽干口燥，舌红，脉弦细者，治疗宜首选（）。
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按《碾压式土石坝设计规范》（DL/T5395-2007），软黏土一般采用下列（）标准评定。
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减压溢流阀的出口压力通常调整为（）MPa。
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超声波探头的压电晶片的功能？