加工油在钻井液槽面上的显示特征:当其混入钻井液中时,多呈条带状,搅动易散不集中。
参考答案:对
The woman said he _____ to use yellow to remind him _______ a warm sunny day.
A.prefered, to
B.preferred, of
C.would rather, from
D.would rather, of
蓄能器的气体压力,最低应大于或等于液压系统最大工作压力的()。
A.50%
B.30%
C.25%
D.15%