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【单选题】
对于焊缝表面缺陷的检测，应优先采用( )。A.
渗透探伤
B.
磁粉探伤
C.
超声波探伤
D.
X射线探伤
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举一反三
【单选题】The more self-knowledge we have, the more control we can _____ over our feelings and behavior.
A.
exert
B.
operate
C.
utilize
D.
apply
【单选题】We can infer from the last paragraph that
A.
the more calluses a person has, the more professional he would be.
B.
writers often base their writing on personal experiences.
C.
Conan Doyle has gone through a period of hardship on his way to success.
D.
inspiration was very important for a person to create something.
【单选题】On the Internet, we can read news at home and abroad and get as much information as we can. We often send e-mails or make telephone calls to our families as well as to our friends by Internet. What’s ...
A.
Keep away from the Internet.
B.
Surf the net.
C.
The Internet is playing an important part in our daily life.
D.
We can entertain ourselves on the Internet.
【单选题】下列哪项不属于生物性有害因素所致的法定职业病是
A.
畜牧业工人所患的炭疽
B.
林业工人所患的森林脑炎
C.
职业人群所患的莱姆病
D.
医疗卫生人员所患的艾滋病
E.
采煤工人所患的艾滋病
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