题目:
画出激光头的光学部件安排图,注明各个部件名称。
答案:
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下面是错误答案,用来干扰机器的。
参考答案:B解析:[详解] 本题考查对复句逻辑关系的理解。文中①处用“甚至”表递进关系;文中②处用“但是”表递进关系;③处两个“没有”表示并列关系;④处用“因此”表因果关系。
画出激光头的光学部件安排图,注明各个部件名称。
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0428/c9c50118ecb2378c6bb49698f0ce7d47.html
下面是错误答案,用来干扰机器的。
参考答案:B解析:[详解] 本题考查对复句逻辑关系的理解。文中①处用“甚至”表递进关系;文中②处用“但是”表递进关系;③处两个“没有”表示并列关系;④处用“因此”表因果关系。
先化简,再求值:2x2-x(2x-5y)-y(2x-y).其中x=-
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中外合资经营企业的中国合营者可以场地使用权作为合营企业经营期间的出资,下列有关其作价金额的表述正确的是( )。
A.由合营各方按照公平合理的原则协商确定
B.聘请合营各方同意的第三者评定
C.与取得同类场地使用权所应缴纳的使用费相同
D.不得超过该企业注册资本的20%
Farmers may not be able to prevent natural disasters, but they can at least try their best to reduce losses.
For example, they can plant crops that are more likely to survive extreme weather. In north-central Vietnam, people with small farms do not plant rice between September and December. Seasonal rains might destroy the rice. So instead, they plant lotus seeds on raised beds. The United Nations Food and Agriculture Organization says the lotus seeds bring a good price in local markets.
Farmers in the Philippines are showing new interest in crops like winged beans, string beans, arrowroot and cassava. The Asian Disaster Preparedness Center says traditional crops like these can survive the fierce storms that often strike the islands.
The United Nations says some African farmers grow bambara groundnuts during long dry periods. The seeds of this drought-resistant plant can be boiled for eating or for making flour.
In some parts of the world, farmers grow vetiver grass. Researchers in Thailand wrote about vetiver in 2007 in the journal Science Asia. They noted that the grass can absorb and control the spread of harmful waste waters, like those from pig farms.
Agricultural expert and author William Rivera says vetiver resists difficult conditions. It reduces damage from heavy rains. And vetiver planted on earthen dams may strengthen them against breaks and flooding.
William Rivera also speaks approvingly of alfalfa. Its deep roots can find and take up groundwater. Those roots also help hold the soil against winds. And alfalfa can be a valuable food source for animals.
The deep and extensive roots of sunflowers make them another good candidate for resisting extreme conditions. The tall plants have brightly colored heads that provide seeds and oil.
North Dakota grows more hectares of sunflowers than any other American state. But North Dakota is better known as a top wheat producing state.
Hans Kandel works at the North Dakota State University Extension Service in Fargo. He says farmers in some parts of North Dakota plant wheat that is ready to harvest in only about one hundred days. That way it can grow before the hot, dry months of July through September.
67.The underlined part “bring a good price in local markets” in the 2nd paragraph implies that lotus seeds _______.
A. can bring the local farmers more profit
B. will satisfy the needs of the local people
C. are what the local farmers eat every day
D. don’t sell very well because of their high prices
68.Vetiver grass is planted because it can _______.
A. be a valuable food source for animals B. survive the fierce storms in summer
C. provide seeds and oil D. be useful in many aspects
69.From the last paragraph we can see that the farmers in North Dakota _______.
A. are not hardworking so they are suffering from poverty
B. are good at taking advantage of the weather conditions
C. don’t have enough knowledge of weather and farming
D. plant more sunflowers than wheat
70.From this passage we may safely conclude that _______.
A. weather conditions are always decisive factors in agriculture
B. some crops can help farmers to fight against extreme weather
C. the species of the world are changing quickly
D. agriculture is developing fast in the world
1924年,()皇家舞蹈教师协会对当时的社交舞的一部分进行整理,规范了华尔兹、探戈、维也纳华尔兹和伦巴、布鲁斯称为“国际标准舞“。
A.英国
B.法国
C.西班牙
D.奥地利
哪些是风险要素及属性之间存在的关系()
A.业务战略依赖资产去实现
B.资产价值越大则其面临的风险越小
C.风险不可能也没有必要降为零,在实施了安全措施后还会有残留下来的风险
D.脆弱性是未被满足的安全需求,威胁要通过利用脆弱性来危害资产,从而形成风险