问题
单项选择题
播种后用黄心土、火烧土、细砂、泥炭和稻壳覆盖，覆盖厚度一般要达到种子直径的（）倍以上，以免水分蒸发。
A、1倍
B、2倍
C、3倍
D、稍加即可
答案
参考答案：B
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播种后用黄心土、火烧土、细砂、泥炭和稻壳覆盖，覆盖厚度一般要达到种子直径的（）倍以上，以免水分蒸发。
A、1倍
B、2倍
C、3倍
D、稍加即可
参考答案：B
以下是一份单据的部分内容，请从各题给出的答案选项中选出可以填入空白处最合适的答案
| China National Cereals,Oils & Foodstuffs Import and Export Corparation,Shenzhen Branch,hereinafter called the (81) ,agree to sell and China Native Products INC,Los Angels,California, (82) ,hereinafter called the Buyers,agree to buy the under-mentioned goods subject to the terms and conditions stipulated (83) : 1．Name of Commodity &Specifications:ZHONG HUA BRAND Salted Cucumber50 tins*200 grams 2．Quantity and Weight:100 Cartons/1000kg 3． (84) price:C & F C3% Los Angeles or San Francisco US$20.00 Per carton 4．Amount:US$2000.00 5．Time of Shipment:During Oct./Nov.,2009 6． (85) :In Cartons 7．Marks & No.:ZHONG HUA BRAND Salted Cucumber No.1-100 8．Loading (86) and Destination:From Shenzhen,China to Los Angeles Or San Francisco 9．Insurance:To be (87) by the Buyers 10．Terms of Payment:To be made against sight draft drawn under an irrevocable (88) ,for the total value of goods in US$2000.00, (89) 10% more or less both in amount and quantity at Sellers’ s option,established through a bank which is mutually agreed by the two sides. 11．Inspection:Certificate of quality & weight and phytosanitary certificate (90) by China Entry & Exit Inspection and Quarantine authorities shall beprovided to the Buyers.The quality and weight certified in the certificates are to be taken as final. |
A．China
B．Germany
C．Japan
D．