问题 单项选择题

钢结构焊接检验中属于焊接接头内部缺陷的是()。

A.夹渣

B.气孔

C.焊瘤

D.凹坑

答案

参考答案:A

解析:焊接的接头质量检验是一种专门检验。它包括外观和内在质量缺陷的确认,外观质量包括焊缝成型的几何尺寸和外观方面的内容,可以通过肉眼发现,有咬肉(咬边)、裂纹、气孔、凹坑、焊瘤等内容;内在质量缺陷主要是指未焊透、内含裂纹和夹渣。选项A属于焊接接头的内部形成有焊渣,属于内部缺陷。气孔B.、焊瘤C.、凹坑D.都可以由肉眼发现,属于外部缺陷。当施工中遇到有焊渣的质量问题时,就可以采取针对性的技术措施,解决质量问题,避免盲目性。

单项选择题

In WAR MADE EASY Norman Solomon demolishes the myth of an independent American press zealously guarding sacred values of free expression. Although strictly focusing on the shameless history of media cheerleading for the principal post World War II American wars, invasions, and interventions, he calls into question the entire concept of the press as some kind of institutional counterforce to government and corporate power.
Many of the examples compiled in this impeccably documented historical review will be familiar to readers who follow the news on the Internet. But such examples achieve fresh impact because of the way Solomon has organized and analyzed them. Each chapter is devoted to a single war hawk argument ("America Is a Fair and Noble Superpower," "Opposing the War Means Siding with the Enemy," "Our Soldiers Are Heroes, Theirs Are Inhuman"), illustrated with historical examples from conflicts in the Dominican Republic, E1 Salvador, Vietnam, Grenada, Panama, Kosovo, both Iraq wars, and others in which the media were almost universally enthusiastic accomplices.
The book should really be subtitled "War reporting doesn’t just suck, it kills. "it makes you feel like demanding a special war crimes tribunal for corporate media executives and owners who joined the roll-up to" shock and awe" as non-uniformed psywar ops. To be sure, this would raise the issue of whether or not following orders might suffice for the defense of obedient slaves such as Mary McGrory and Richard Cohen, who performed above and beyond the call of duty. "He persuaded me, " ncGrory gushed(热情洋溢地表达) the morning after Colin Powell addressed a plenary session of the United Nations on February 5, 2003, declaring that Iraq had weapons of mass destruction. " The cumulative effect was stunning. "In the same Washington Post edition, Cohen wrote.
The evidence he presented to the United Nations—some of it circumstantial, some of it absolutely bone-chilling in its detail—had to prove to anyone that Iraq. not only hasn’t accounted for its weapons of mass destruction but without a doubt still retains them. Only a fool—or possibly a Frenchman—could conclude otherwise.
Solomon demonstrates how this kind of peppy prewar warm up degenerates into drooling and heavy breathing once the killing begins. As if observing a heavy metal computer game, the pornographers of death concentrate on the exquisite craftsmanship and visual design of the murder machines and the magnificence of the fiery explosions they produce.

In the second to last paragraph, "...could conclude otherwise " probably means to think ______.

A.the evidence given was true

B.Iraq had no weapons of mass destruction

C.Cohen gave horrifying description of Iraq

D.Colin Powell’s address was out of question

多项选择题