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【多选题】
关于轴封系统描述正确的是()A.
防止高中压缸蒸汽外漏，损失工质，或使润滑油质恶化
B.
防止空气漏入低压缸，破坏真空
C.
汽封的介质为压缩空气
D.
汽封介质为蒸汽
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反馈参考答案：
举一反三
【简答题】保险合同的免责条款必须是明示的。 ()
【单选题】How did Tony make his dream come true?
A.
By the help of the author.
B.
By the help of his friends.
C.
By his own hard work.
D.
By his good luck.
【简答题】Fill in the blanks in the following sentences with the correct form of the phrases from the following. venture, spurt, retort, stumble, contract I _____ a new plan at the meeting because I had mad...
【单选题】患者，男，36岁。外伤性肠破裂，手术后第6d出现高热、寒战，右上腹疼痛，伴有呃逆，首先考虑
A.
膈下脓肿
B.
盆腔脓肿
C.
肠间脓肿
D.
门静脉炎
E.
胸腔感染
【单选题】There is nothing in the world ________ can make him give up his dream.
A.
what
B.
that
C.
which
D.
who
【简答题】简述TD-SCDMA系统中的关键技术有哪些。
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