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【单选题】
一套浮动密封一般有四个密封环,密封油一般从高压侧靠近( )后输入。A.
第一个环
B.
第二个环
C.
第三个环
D.
第四个环
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反馈参考答案：
举一反三
【简答题】用邻苯二甲酸氢钾标定氢氧化钠浓度：可准确称取邻苯二甲酸氢钾于锥形瓶，加入用适量新煮沸的蒸馏水溶解邻苯二甲酸氢钾，将待测定的氢氧化钠溶液装于碱式滴定管中，加入酚酞指示剂，滴定至微红色即为滴定终点。以上操作是 滴定法。
【简答题】He feels like (have) _____ a good rest after a long journey.
【单选题】'The top Democrat on the House Education Committee, Rep. George Miller of California' means that Mr. George Miller is ______.
A.
from the State of California, a representative of his state at the House of Representatives, and a Republican Party member, and he sits on the Education Committee of the House of Representatives of the United States of America
B.
a Republican representative from the State of California, a representative of the House of Representatives of the USA to the State of California, and the top Democrat on the Education Committee of the House of Representatives
C.
a representative of the State of California to the House of Representatives of the United States of America, a member of the Democratic Party, and a member on the Education Committee of the House of Representatives
D.
a top Democrat representing George Miller from the State of California, a Republican Party member at the House of Representatives, and a member of the Education Committee of the House of Representatives of the United States of America
【单选题】He feels like _____a rest, but i would like _____ a picnic.
A.
having; having
B.
to have; to have
C.
to have; having
D.
having ; to have
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