金融衍生工具建立在基础金融工具或金融变量之上,其价格取决于金融变量的价格的派生产品。( )
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有担保的存托凭证由承销商与存券银行签署存券协议。( )
A. 对
B. 错
The texture of the soil depends on the relative amounts of different-sized particles that combine to make up the soil. These particles can be as large as stone and gravel or as small as clay. A typical clay soil is composed of approximately 60 percent actual clay, 20 percent silt, and 20 percent sand. The particles in a sandy soil are so fine that it tends to be compact and interferes with the oxygen supply for plant roots. Water has trouble entering this impervious soil, and runoff is very common during rainfalls. A typical light sandy soil is composed of approximately 70 percent sand, 20 percent silt, and 10 percent clay. The particles in a sandy soil are comparatively large, permitting water to enter the soil and to pass through it so quickly that it often carries nutrients with it and dries out very rapidly. The texture of sandy soils is generally very difficult to modify because huge amounts of organic material must be added. A typical loam soil is composed of approximately 40 percent sand, 40 percent silt, and 20 percent clay, making it an ideal garden soil. It is easily worked and retains water and nutrients, which are slowly absorbed by plant roots. A typical adobe soil is a clay soil present in hot, dry areas of the country and is often very hard and cracked. It has all the disadvantages of a heavy clay soil and, being much drier, is more difficult to correct. Adobe soil differs from other clay soils in that ______.
A. other clay soils retain less water
B. other clay soils have smaller particles
C. adobe soil has had organic material added to it
D. adobe soil is found mostly in dry climates
王某在某机票代理处购买四天后起飞的打折机票一张。第二天,由于特殊原因,王某向该机票代理处提出退票申请。机票代理处虽然同意退票,但告知王某打折机票的退票费需按机票原价的50%扣除,王某对此提出异议。日后,王某又与承运人某航空公司交涉。航空公司认为,本承运合同的当事人应是王某与机票代理处,自己不存在违约问题,尽管机票上印有退票条款,但退票费的收取应按航空行政管理部门有关内部文件的规定执行。王某认为,航空公司的行为违反了诚信原则,并且未尽告知义务,已构成违约。在协商未果的情况下,王某向法院提起诉讼,要求航空公司及代理处返还扣除的退票费。 相关背景资料: (1)机票上有关退票的规定:旅客在客票上列明的航班规定离站时间24小时以前要求退票的,退票手续费由承运人规定;在航班规定离站时间24小时以内至2小时以前要求退票的,收取客票价10%的退票费。 (2)航空行政管理部门有关“打折机票收取50%的退票费”的规定,未曾正式向外公告,只是在管理部门指定的航机读物,即行业报纸上以新闻形式出现。 (3)机票上有关退票的规定是执行航空旅客货物运输规则中的相关规定。 (4)航空行政管理部门有关打折机票退票费的文件实施时间,晚于航空旅客货物运输规则的实施时间。 (5)对机票上“退票手续费由承运人规定”的条文,航空公司没有证据证明原告已经知道。 本纠纷处理所涉及的法律原则为( )。
A. 权利能力原则
B. 诚实信用原则
C. 合同自由原则
D. 情势变更原则
E. 不得滥用诉权原则
周某和李某因为涉嫌绑架罪,已被公安机关刑事拘留。请根据案情回答下列问题: 公安机关向检察机关申请逮捕,检察机关可以作出( )。
A. 批准逮捕的决定
B. 不批准逮捕的决定
C. 退回公安机关补充侦查的决定
D. 自己另行侦查的决定
E. 撤销案件的决定