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【单选题】
下列说法中,正确的是
A.
水分子是由一个氢分子和一个氧原子构成的
B.
原子是构成物质的最小粒子
C.
地壳中含量最多的金属元素是铁元素
D.
含氧的化合物可能不是氧化物
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参考答案:
举一反三
【单选题】In the following, which subject is the safest one to start a conversation? ______
A.
Salary.
B.
Privacy.
C.
Politics.
D.
Weather.
【判断题】五层瓦楞纸板又称双层瓦楞纸板。( )
A.
正确
B.
错误
【判断题】五层瓦楞纸板又称双面双瓦楞纸板。
A.
正确
B.
错误
【单选题】听力原文:F: Flying is the safest way to travel. M: I'm not so sure about that. What does the man mean?
A.
He agrees with the woman.
B.
He doesn't quite agree her.
C.
He prefers to travel by ship.
【判断题】熔化极CQ2气体保护焊,中厚板横位对接接头焊接过程中,采取单道焊,可以减少焊接应力。
A.
正确
B.
错误
【单选题】Depending on the need of clients, SWIFT is the most convenient and the safest method.
A.
正确
B.
错误
【单选题】Which tanker discharge pattern would be the safest and most efficient ________.
A.
Empty the forward tanks and start working aft,emptying each tank in sequence
B.
Start discharging with most of the discharge coming from forward,but include some from midships and after tanks
C.
Start pumping from forward,midships,and aft with the discharge distributed equally among the tanks
D.
Start pumping from midships and then work forward and aft simultaneously as the midships tank is emptied
【简答题】The passage is mainly about __________. A) the fact that it is not the safest way to invest in the stock market B) buying and selling shares in the stock market C) the ways to invest in the stock mark...
【判断题】( )胃把消化后的饮食物下输到大肠。A. 对 B. 错
A.
正确
B.
错误
【判断题】双面瓦楞纸板有三层,又称单瓦楞纸板。
A.
正确
B.
错误
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