题型:问答题 简答题 She was fortunate ______ to star in the film which ______ in the remote mountainous village. A.having been picked out; was setB.to have been chosen; setC.to be picked out; was setD.to have been chosen; was set 查看答案
题型:问答题 简答题 筛分法做颗粒分析,2mm筛下的土,将试样按从大到小的次序通过小于2mm的各级细筛,可用摇筛机进行振摇,振摇时间一般为()。A.5~10minB.10~15minC.15~20minD.20~25min 查看答案
题型:问答题 简答题 拖船可给出的拖力或推力:().A.与拖船的运动速度无关,与拖船的主机功率及推进器种类有关B.与拖船的运动速度有关,与拖船的主机功率及推进器种类有关C.与拖船的运动速度有关,与拖船的主机功率及推进器种类无关D.与拖船的运动速度无关,与拖船的主机功率及推进器种类无关 查看答案