The selection of an oil depends （） on the operating conditions, the design of the engine and the type of fuel to be burned.
A. to a great extent
B. on a great extent
C. on mainly
D. on only
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雷达是英文“Radar”的译音。
A. 正确
B. 错误
房地产经纪服务合同成立的要件不包括（）。
A. 委托人的签名或者盖章
B. 授权人的签字或者盖章
C. 承办该业务的两个房地产经纪人协理的签名
D. 受托房地产经纪机构的盖章
You are keeping the required garbage disposal records. The amount of garbage disposed must be stated in（）.
A. cubic meters
B. both cubic meters and cubic feet
C. both kilos and pounds
D. barrels of 55 gallon capacity
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