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【单选题】
Brent' s Merchandise Replacement Plan The Merchandise Replacement Plan(MRP) covers merchandise such as cassette players, portable radios, calculators, and electronic appliances under $300. A replacement voucher will be issued for a defective product and will be valid for 12 months from the original purchase date. Customers can request a replacement voucher at any time during this period by calling at (813) 502-3461. During the call, customers will be asked to provide the product and store codes printed on the original sales receipt. When this is done, they will be issued a replacement voucher and the authorization number, along with the instructions on how to send the defective product back to us. Do not return the product to the store. This Merchandise Replacement Plan will not cover products for damage due to spilled liquids, unauthorized repairs, or abuse or mishandling of the product by the user. This Merchandise Replacement Plan will be cancelled in the case of fraud by the user. The notification of cancellation will be sent by mail. For whom is this information intended?
A.
Provider of telephone service
B.
Makers of electronic components
C.
Purchasers of electronic products
D.
Authorized repair center personnel
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【简答题】冠与帽,常被人误为一物异名,今有帽无冠,故好像“帽”是口语,“冠”是文言。如常见拍证件照时,常书面告知“要求免冠”,这个“冠”实指帽,不说“脱帽”而言“免冠”,似乎比较典雅。其实因不知古代冠帽是二物而误用。 古代有冠有帽,二物虽都加于人首,但差别甚大,到现代用的引申义,也各肖其祖。 二字构意已显不同。“帽”,初文作曰,原形就像一个倒覆的钵头。“曰”字,先变作“冒”,后来变为“帽”字。帽的基本功能就...
【单选题】苗木间苗的主要时期是 ( ) 。
A.
出苗期
B.
幼苗期
C.
速生期
D.
生长后期
【单选题】以DNA的一条链“…—A—T—C—…”为模板,经复制后的子链是 [     ]
A.
…T—A—G—…
B.
…—U—A—G—…
C.
…T—A—C—…
D.
…—T—U—G—…
【单选题】液体与固体表面的接触角等于36°C,液体在固体表面的润湿性为
A.
润湿性差
B.
润湿性好
C.
完全润湿
D.
完全不润湿
【简答题】对一双链DNA而言,若一条链中(A+G)/(T+C)=0.7,则: (1)互补链中(A+G)/(T+C)=? (2)在整个DNA分子中(A+G)/(T+C)=? (3)若一条链中(A+T)/(G+C)=0.7,则互补链中(A+T)/(G+C)=? (4)在整个DNA分子中(A+T)/(G+C)=?
【单选题】苗木间苗的主要时期是
A.
出苗期
B.
幼苗期
C.
速生期
D.
硬化期
【单选题】一个标准的双链DNA分子的一条链上(A+T)/(C+G)=a,其互补链中(C+G)/(A+T)的比值是 [     ]
A.
1/a
B.
2a
C.
a/2
D.
a
【单选题】某双链DNA分子含有200个碱基,一条链上A∶T∶G∶C=1∶2∶3∶4,则该DNA分子()
A.
含有4个游离的磷酸基
B.
含有腺嘌呤20个
C.
四种含氮碱基A∶T∶G∶C=3∶3∶7∶7
D.
另一条链上A∶T∶G∶C=4∶3∶2∶1
【简答题】这件作品的名字是(),其作用是为了显示法老的力量和威严。
【判断题】幼儿园的课程内容必须具备系统性。
A.
正确
B.
错误
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