［A］ Keeping ［B］ Disapproving［C］ Supporting ［D］ Forgetting

[单选题][A] taking part [B] keeping silence [C] making exception [D] paying respect

[单选题]There is ________ in the holds keeping eyes opened to prevent theftA．watchmanB．watchmenC．a watchmenD．a watchman

[单选题]The boat sailed slowly, keeping ______to the coast as the man in it was afraid of ______the direction.A． close, lostB． close, losingC． next, losingD． closely, lost

[单选题]D．uring the watch keeping at sea, the engineer in charge should notify______in the event of any serious occurrence or a situation where he is unsure of the action to takeA．the masterB．the chief engineerC．the bridgeD．the company superintendent

[试题]when you do the watch keeping in the engine room ,what should you be careful about ?

[名词解释] house-keeping gene (看家基因)

[名词解释] 新梢持嫩性（Shoot tenderness-keeping ability）

[单选题]We′re all keeping our__________ crossed that the surgeons do not find anyth

[单选题]化简(A-B-C) ∪(A-B) ∩C) ∪(ANB-C) ∪(A∩B∩C) =(62)。A．A∩BB．B∩CC．AD．B

[单选题]模式R({A,B,C}，{(A,C)→B，(A，B)→C，B→C})属于最高范式的是(43)。A．1NFB．2NFC．3NFD．4NF