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【多选题】
冷等离子体在植物育种中的应用很广且效果较好,下列哪些是冷等离子体处理植物种子可以达到的效果?
A.
根系发达。
B.
抗旱能力增强。
C.
抗倒伏能力增强。
D.
灭菌、抗病害。
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【单选题】Many strange new means of transport have been developed in our century, the strangest of _____ being perhaps the hovercraft(气垫船).
A.
which
B.
them
C.
that
D.
it
【单选题】在《律吕新书》中, 律学大师 蔡元定提出了 ___________ 。
A.
五声律
B.
十二律
C.
十八律
D.
六十律
【单选题】在《律吕新书》中,律学大师蔡元定提出了___________。A、五声律 B、十二律 C、十八律 D、六十律
A.
五声律
B.
十二律
C.
十八律
D.
六十律
【简答题】A.He used to share his house openly with the strangest creatures. B.Guests who came to dinner had to be prepared for a most unusual menu. C.Once he even tried to make soup from elephant's trunk. D.Abo...
【简答题】听力原文:Hello, I wonder if you can help me. This is Bill Kennedy on 3416577. I am phoning to see if you have any vacancies in your Accounts Department. I spoke to someone at the weekend who thought there...
【单选题】听力原文:M: I wonder if you can tell me how to find a place where I can have my shoes fixed? W: Well, of course, you can always look in the yellow pages in the back of the telephone book under Shoe Repair...
A.
The bookstore.
B.
The telephone company.
C.
A map of the town.
D.
A shoe repair shop.
【单选题】在转速电流双闭环调速系统中,电机转速可调,转速不高且波动较大。此故障的可能原因是()。
A.
PI调节器限幅值电路故障
B.
电动机励磁电路故障
C.
晶闸管或触发电路故障
D.
反馈电路故障
【单选题】听力原文:W: Professor Marnes, I wonder if you can fill me in on your lecture last Friday. I had to attend a scholarship award ceremony. M: Oh well, congratulations. I hope you were rewarded handsomely! W:...
A.
She is writing a competitive paper for a scholarship.
B.
She is doing a paper.
C.
She missed the lecture.
D.
She is planning to attend the scholarship award ceremony.
【简答题】Use ''I wonder if ....'' to paraphrase the following sentence: Can I call you back in a minute? Example: Can you help me? I wonder if you can help me. Task: Can I call you back in a minute? I wonder ...
【单选题】若计算表明钢轴的刚度不够,下列措施中能达到提高刚度目的是________________。
A.
采用淬火钢
B.
减小应力集中
C.
用合金钢代替碳钢
D.
增加轴的直径尺寸
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