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【判断题】
在安排色序时,前一色油墨黏性一定要大于后一色油墨的黏性。
A.
正确
B.
错误
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A.
had , stayed
B.
did, stay
C.
have, stayed
D.
are, staying
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A.
避开肘窝穿刺
B.
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C.
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D.
每日观察穿刺点及周围流脓情况
【单选题】— I'm going to the U.S.A. — How long _____ you _____ there? [     ] A. have; stay
B.
are; stayed
C.
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D.
do; stay
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【单选题】如图所示,根据逻辑图,下列正确的逻辑式是( )。
A.
Y=B(A+C)+AB
B.
Y=A(B+C)+BC
C.
Y= A(B+C)+AC
D.
Y= C(B+A)+BC
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A.
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B.
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C.
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A.
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B.
铁锈是一种混合物
C.
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D.
铁生锈时会有难以察觉的热量放出
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