| Text 3 Most growing plants contain much more water than all other materials combined. C.R. Barnes has suggested that it is as proper to term the plant a water structure as to call a house composed mainly of brick a brick building. Certain it is that all essential processes of plant growth and development occur in water. The mineral elements from the soil that are usable by the plant must be dissolved in the soil solution before they can be taken into the root. They are carried to all parts of the growing plant and are built into essential plant materials while in a dissolved state. The carbon dioxide (CO2) from the air may enter the leaf as a gas but is dissolved in water in the leaf before it is combined with a part of the water to form simple sugars the base material from which the plant body is mainly built. Actively gr A. a plant efficiently utilizes most of the water it absorbs B. carbon dioxide is the essential substance needed for plant development C. a plant needs more water is found in its composition D. the stronger the wind, the more the water vapor loss [单选题] 钢筋焊接作业完毕后应( ),检查现场,确认无火灾隐患后方可离开。 (1.0分)
A. 切断电源 B. 拆除接地 C. 拆除护栏 D. 悬挂标示牌 [单选题]各类作业人员应接受相应的安全生产教育和岗位技能培训，经（ ）上岗。
A.A.领导批准 B.B.安全培训 C.C.考试合格 D.D.现场实习 [单选题]只有每一个旅客座椅的椅背处于竖立位置，飞机方可起飞或着陆。
A.是 B.否 [多项选择]根据使用上的需要，存款人在储蓄单位开设的储蓄账户可以分为不同的类别，主要包括( )。
A. 一般存款账户 B. 基本存款账户 C. 专业存款账户 D. 临时存款账户 [判断题]2.3 统一社会信用代码在全国范围内是唯一的。
A.正确 B.错误 [单选题]原发型肺结核原发病灶多见于
A.左肺尖 B.右肺尖 C.左肺门 D.右肺上叶底部和下叶上部 E.右肺门 [单选题]前轮轮毂通过内外( )轮毂轴承套装在转向节轴颈上。轴承的松紧度可以用调整螺母调整。
A.一个 B.两个 C.三个 D.四个 [单选题]工作班成员的变更，应经（ ）的同意，并在工作票上做好变更记录。
A.工作票签发人 B.工作许可人 C.工作负责人 D.工作票签发人与工作许可人 [单选题]思维的重要特征是( )
A.深刻性和观念性 B.间接性和概括性 C.抽象性和创造性 D.分析性和综合性 E.上升性和决策性 [判断题]供电可靠性是指配电网向用户持续供电的能力。( )
A.正确 B.错误 [填空题]入井人员必须戴（），随身携带（）和矿灯，严禁携带烟草和（），严穿化纤衣服，入井前应严禁（）。
[判断题]晶闸管加了门极触发电压就会导通。()
A.正确 B.错误 我来回答: 提交
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