题目内容
染色质和染色体是（）
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Complete the passage with the appropriate form of the collocations from the followingexpressions.1. to target a(n) audience 2.to launch a new campaign3. to sponsora sports event4. to project a(n) image 5. to endorse a(n) brand 6. to make a commercialSigning a celebrity and using their star status to 1) _______________ is one of the standard advertising techniques. Tag Heuer, the watchmaker which 2) ________ a number of ______________, once had Tiger Woods under contract. Audrey Tautou has 3) ________________ for Chanel No5, which has been shown around the world.But choosing the celebrity who will 4) __________ exactly the right _______ is not always so easy, as several companies like Tag Heuer have found out. What happens when a company is about to 5) _________ a new ____________ featuring a celebrity and it suddenly finds out that they are accused of a criminal offence or involved in a scandal? While there is no doubt that most celebrity endorsements do increase sales, more and more advertisers are turning to other less risky ways of 6) __________ the __________ that they want to reach.
关于配气机构,下列说法错误的是()。
配气相位不正时的原因,可能有()。
设某发动机的进气提前角为α,进气迟关角为β,排气提前角为γ,排气迟关角为δ,则该发动机的进、排气门重叠角为()。
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