Only special plants can survive the
terrible climate of a desert, for these are regions where the annual range of
the soil temperature can be over 75℃. Furthermore, during the summer there are
few clouds in the sky to protect plants from the sun’s ray. Another problem is
the fact that there are frequently strong winds which drive small sharp
particles of sand into the plants, tearing and damaging them. The most difficult
problem for all forms of plant life, however, is the fact that the entire annual
rainfall occurs during a few days or weeks in spring. Grasses and flowers in desert survive from one year to the next by existing through the long, hot, dry season in the form of seeds. These seeds remain inactive unless the right mount of rain falls, If no rain falls, or if insufficient rain falls, they wait until the n A. the strong winds B. the long summer days C. the strong sun’s ray D. the high soil temperature [单项选择]国标规定,用户摘机后如一直不拨号,则()秒后超时听忙音。
A. 3 B. 5 C. 10 D. 20 [单项选择]应用多种皮肤刺激引起运动是
A. Bobath方法 B. Brunnstrom方法 C. PNF方法 D. Rood方法 E. 运动再学方法 [判断题]由于出厂试验时,低压集束导线线芯之间、线芯与地之间的耐压水平可达到3500V/1min交流耐压,因此带电作业时可不进行绝缘遮蔽。
A.正确 B.错误 [单选题]送达回证中最关键的内容是( )
A.签收人及收件日期 B.送达文件名称及编号 C.送达人姓名 D.送达的具体方式 [单选题]道岔基本轨垂直磨耗,50kg/m及以下钢轨,在到发线上超过()时,应及时修理或更换。
A.6mm B.8mm C.10mm D.11mm [单选题]电子平直仪应多长时间进行一次校准?
A.每月一次 B.每季度一次 C.每半年一次 D.每年一次 [单选题]卸车后须由承运人洗刷除污的整车货物,均由到站向收货人核收( )。
A.货车洗刷除污费; B.货车清扫费; C.货车洗刷费; D.货车除污费 [单选题]中国大陆首座百万千瓦级大型商业核电站,全球最大的轻水压水堆核电基地是( )
A.秦山核电站 B.田湾核电站 C.大亚湾核电站 D.岭澳核电站 [判断题] 配电变压器的绕组额定电压为10kV时,出厂时试验电压是35kV,交接及大修后试验电压是20kV。
A.正确 B.错误 [多选题]审慎经营规则,包括风险管理、内部控制、( )、关联交易、资产流动性等内容。
A.A.资本充足率 B.B.资产质量 C.C.损失准备金 D.D.风险集中 我来回答: 提交
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