在责任保险中，（）不具备独立的条件，是附属的险种。
A.过失责任保险
B.附加责任保险
C.约定责任保险
D.职业责任保险
参考答案：B
_____ in the entertainment circle, the songwriter still tries to stick to his own style.[ ]
A. Involving
B. Involved
C. Be involved
D. Involves
冷冻干燥制品的正确制备过程是
A．测定产品共熔点→干燥→预冻→升华再干燥B．预冻→升华干燥→测定产品共熔点→再干燥C．测定产品共熔点→预冻→升华干燥→再干燥D．测定产品共熔点→升华干燥→预冻→再干燥E．预冻→测定产品共熔点→升华干燥→再干燥
