| An international team of research
scientists has created a new kind of rice that contains Vitamin A. The
researchers used genetic engineering to create the new rice. Genetic engineering
is the technology of changing the genes of living things. The researchers say
the rice could help millions of people who do not get enough Vitamin A in the
food they eat. The findings were published in Science magazine. Vitamin A is necessary for the body’s natural defense system against disease. Vitamin A is needed to help prevent skin and other tissues from drying out. It also produces a light-sensitive substance in the eyes. People who do not get enough Vitamin A cannot see well in the dark. They may develop a condition that dries the eyes. The condition can result in infections that lead to blindness.< [单选题]根据我国现行的有关交易制度规定，实行次日交易回转交易的证券品种是（ ）。
A.债券竞价交易 B.B股 C.权证交易 D.专项资产管理计划收益权份额协议交易 [多选题]零件的刚度分为()两种。
A.表面接触刚度 B.表面变形刚度 C.整体变形刚度 D.整体接触刚度 E.表面截面应 [单选题]若不能确定冻土层尝试时，接地网埋深至少应在地下（）处。
A.0.6 B.0.8 C.1 D.1.2 [单项选择]对比剂轻度过敏反应的处理是（）
A. 暂停或减慢注射，必要时口服异丙嗪25mg或肌注地塞米松10mg B. 皮下注射1‰肾上腺素0.5～1.0ml，或氨茶碱0.25mg加10%葡萄糖10ml注射 C. 静脉或肌内注射盐酸苯海拉明20mg，或肌内注射异丙嗪25mg D. 加大剂量注射 E. 换用其他种类对比剂 [单选题]下列选项中，不属于半导体二极管的组成的是
A.管芯 B.从P区和N区引出的两根金属线； C.外壳 D.电源 [多项选择]世界银行贷款项目招标采购程序中，( )采购方式在选择咨询人时不考虑报价。
A. 询价采购 B. 基于质量的选择 C. 基于资格的选择 D. 国际竞争性招标 E. 国内竞争性招标 [单项选择]某产品各零部件功能重要性程度采用0-1评分法评分，结果见下表。
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