精馏塔塔釜液位计指示偏高时,可能会导致()
A.塔釜循环泵抽空
B.塔釜循环泵超负荷
C.淹塔
D.塔内液泛
参考答案:A
轴承内圈内圆柱面与轴颈的配合应采用基轴制。()
In the questionnaire, the subjects are questioned whether they____ no smoking in the public area.
A.agree
B.comment
C.advocate
D.conduct