某采矿企业2010年6月开采锡矿石50000吨，销售锡矿原矿40000吨、锡矿精矿100吨，锡矿的选矿比为1：15，锡矿资源税适用税额每吨6元。该企业6月应纳资源税（）元。
查看答案
勘察合同采用定金担保，发包人向勘察人支付预计勘察费总额的（）作为定金。 A．10% B．15% C．20%
The author indicates that autism researchers should not focus on ______
A. trying to use IQ test methods which are suitable for autistic children to get reasonable scores.
B. asking the parents of autistic children to find abilities such as reading in their children.
C. finding ways to teach autistic to communicate and engage with strangers.
D. encouraging autistic children to make use of their own intelligence in practice.
如果将旗形中上倾和下倾的平行四边形变成上倾或下倾的三角形，就会得到楔形。 ()
A. 正确
B. 错误
根据《招标投标法》，中标通知书发出后30日内，招标人与中标人应当按照招标文件 和（）订立书面合同。
微信支付 
支付宝支付