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【单选题】
血栓形成是指A.
在活体心血管中，血小板聚集成固体质块的过程
B.
血栓脱落后引起栓塞的现象
C.
在活体心血管内，有固体质块物
D.
在活体心血管内，血液成分形成固体质块的过程
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皮皮学刷刷变学霸
举一反三
【单选题】British scientists said teenagers are programmed to take risks because they enjoy the thrill of
A.
30. British scientists said teenagers are programmed to take risks because they enjoy the thrill of dangerous situations________ others. A．more than
B.
less than
C.
other than
D.
rather than
【简答题】计算 （1）sin245°- cos60°+ tan60°cos230° （2）
【简答题】求值：sin 2 45°-cos60°+tan60°?cos 2 30°．
【简答题】1 4 ta n 2 45°+ 1 sin 2 30° -3co s 2 30°+ tan45° cos0° - sin40° cos50° ．
【简答题】计算题． （1） sin30°-cos45° cos60°-sin45° （2）（tan45°） 2 - cos 2 30°-2cos30°+1 ．
【单选题】Pupils usually would like to take ________ advice their teachers give.A．whicheverB．howeverC．what
A.
30. Pupils usually would like to take ________ advice their teachers give. A．whichever
B.
however
C.
whatever
D.
Whenever
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