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【单选题】
焊接30CrMnSiNi2A钢时,除焊后低温回火外,还要采取一定的预热措施,预热温度应 淬火后的回火温度。A.
高于
B.
低于
C.
等于
D.
不小于
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【简答题】Generally speaking,____________(按照说明时), the drug has no side effect.
【单选题】There are some social problems in the United States. And drug abuse has come to be 【21】______ as one of the most challenging social problems facing the nation. Indeed, the very word' drug' excites str...
A.
regarded
B.
respected
C.
referred
D.
treated
【单选题】For years the strategy against drug ______.
A.
hasn't worked as desired
B.
has encouraged the supply of drug
C.
hasn't cut off the networks that distribute drug
D.
has cracked clown on drug consumers
【单选题】Anti-drug work has become a ______ of attention among the international community with the spread of drug abuse in the world.
A.
spot
B.
center
C.
zoom
D.
focus
【简答题】For most drug users, their ______ has something to do with theist psychological addiction.
【简答题】Consumer mistrust has led to ______ about drug safety and risks.
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