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问题 单项选择题

生态系统由植物成份和非生物成份组成。下列组合均为非生物成份的是（）

A.植物；降雨；阳光

B.太阳辐射；温度；氧气

C.水；蚯蚓；泥土

D.化肥；二氧化碳；蘑菇

答案

参考答案：B

听力题

根据下列句子及所给汉语注释，在答题卡相应题号的横线上写出空缺处各单词的正确形式。（每空只写一词）

小题1:They've had to put their wedding off until______ (九月).  

小题2: I ________(决心) to carry on with my work then.

小题3:I’m very __________(熟悉) with computer programs .    

小题4:She always________(设计) objects very skillfully.

小题5:I’d like to know what is the ________（长度）of the bridge.

小题6:We shouldn’t spit into the dirt in _____(公共) places.

小题7:He _______(继任) his father as the manager of the company.

小题8:Our country was __________(成立) in 1949.

小题9:If you raise that plan, I will firmly _____(支持) you.

小题10:I would ___________(感激)it if you can help me a lot with my work.
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多项选择题

继电器一般性检验项目有（）。

A.外部检查

B.内部及机械检查

C.绝缘检验

D.继电器线圈电阻的测定

E.继电器触点工作可靠性检验
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