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【多选题】
已知乙醇和水的汽液平衡数据如下:X: 0 0.01 0.03 0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.894;Y: 0 0.11 0.21 0.31 0.43 0.52 0.575 0.614 0.657 0.698 0.755 0.82 0.894。在一连馏塔中分离乙醇和水,原料中乙醇含量为0.4(均为mol含量),塔顶为,泡点回流,回流比为3,塔顶流出液乙醇含量为0.84,塔釜液含乙醇为0.02。的q值为1。问理论塔板数为多少,第5块塔板上气液相的乙醇含量?A.
15
B.
0.772866229985167
C.
0.801949971385762
D.
0.753930055362677
E.
0.789649672488875
F.
11
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举一反三
【单选题】As an autobiographical play, O'Neill's _____(1951) has gained its status as a world classic and simultaneously marks the climax of his literary career and the coming of age of American drama.
A.
Long Day’s Journey Into Night
B.
The Hairy Ape
C.
Desire Under the Elms
D.
The Iceman Cometh
【单选题】《企业安全生产标准化基本规范》要求生产经营单位应加强生产现场安全管理和生产过程的控制。对动火作业、起重作业、受限空间作业、临时用电作业、高处作业等危险性较高的作业活动实施()管理。
A.
专人监护
B.
特殊
C.
作业许可
D.
监理监督
【单选题】The coming of age of the postwar baby boom and an entry of women into the male-dominated job market have limited the opportunities of teenagers who are already questioning the heavy personal sacrifice...
A.
1
B.
2
C.
3
D.
4
【单选题】As an autobiographical play, O'Neill's _______ ( 1956 ) has gained its status as a world classic and simultaneously marks the climax of his literary career and the coming of age of American drama.
A.
The Iceman Cometh
B.
Long Day's Journey Into Night
C.
The Hairy Ape
【单选题】The coming of age of the postwar baby boom and an entry of women into the male-dominated job market have limited the opportunities of teenagers who are already questioning the heavy personal sacrifice...
A.
1
B.
2
C.
3
D.
4
【简答题】严禁违反操作规程进行用火、进入受限空间、临时用电、甩钻具、起重作业，违者给予（）；造成后果的，予以开除或解除劳动合同。
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