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【单选题】
若气体通过固定床的线速度按空床计算为0.2 m/s，则真正的线速度为 m/s。已知所填充的固体颗粒的堆密度为1.2g/cm3，颗粒密度为1.8 g/cm3。A 0.8 B 2 C 1 D 0.6A.
A
B.
B
C.
C
D.
D
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反馈参考答案：
举一反三
【单选题】A growing number of customers have been inquiring about the pending price rises. pending:
A.
adj
B.
noun
C.
verb
【简答题】公司上周任命他为总经理。 (SVOCA)
【单选题】The word 'backlog' in Paragraph 2 means______.
A.
burden
B.
a group of pending cases that were not dealt with at the proper time
C.
litigant
D.
situation
【简答题】pending
【简答题】把一个连贯动作的两个不同片段组接在一起時,有三条基本规则必须 遵守,即( )的匹配、( )的匹配和( )的匹配。
【单选题】The word 'backlog' in Paragraph 2 means______.A.burdenB.a group of pending cases that we
A.
2：The word 'backlog' in Paragraph 2 means______. A.burden
B.
a group of pending cases that were not dealt with at the proper time
C.
litigant
D.
situation
参考解析：
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