20kV电压等级相对于10kV电压等级的优越性有()
A.增加供电能力
B.保证电压质量
C.降低电网的电能损耗
D.节省电网的建设费用
参考答案:A, B, C, D
用所给词的适当形式填空。
1. I'm going __________(sightsee) in Italy.
2. She plans _________(have) a very relaxed vacation.
3. What should they _________(take)with them?
4. My grandfather often goes ______(fish) every Sunday.
5. Can your sister _________(speak) English?
补写下列名篇名句中空缺部分。
(1)子曰:“不患人之不己知, 。”(《论语·学而》)
,病树前头万木春。(刘禹锡《酬乐天扬州初逢席上见赠》)
(2)蟹六跪而二螯, ,用心躁也。(《荀子·劝学》)
,蓝田玉暖玉生烟。(李商隐《锦瑟》)
(3)是日也,天朗气清,惠风和畅, ,俯察品类之盛。(王羲之《兰亭集序》)
舞榭歌台, 。(辛弃疾《永遇乐·京口北固亭怀古》)
(4) ,枯松倒挂倚绝壁。(李白《蜀道难》)
峰峦如聚,波涛如怒, 。(张养浩《山坡羊·潼关怀古》)