已知二元一次方程-2x+y=-4，用含x代数式表示y=______．

根据短文内容和所给的首字母，写出短文中所缺的单词，使短文完整、合乎情景。

Hi everyone, I’ve been in Xuzhou for over a week now. I’m having a g  小题1:time. During the first f  小题2: days I visited some tourist attractions — Yunlong Lake, Yunlong Hill, Guishan Han Tomb(汉墓), etc. Most p  小题3: were crowded with tourists, so yesterday I went shopping and I b 小题4: some souvenirs. Today I went to an interesting art gallery. I got lost on my w  小题5: back to the hotel, but it didn’t matter— I found a really good market w 小题6: lots of small shops. I ate in the hotel the first night, but usually I go out and have dinner in a restaurant b 小题7: the food is fantastic. I’ve s 小题8: a lot of money, but it’s certainly worth it. I like people in Xuzhou. They are s 小题9: nice people! I’ve taken many photos so you’ll be able to see f 小题10: yourself when I come back home next Wednesday. See you then!

董事会应当就本次发行证券的种类和数量、发行方式、发行对象及向原股东配售的安排、定价方式或价格区间、募集资金用途、决议的有效期及其他必须明确的事项进行逐项表决。( )

根据《中国邮政储蓄网点合规检查管理办法（试行）》规定，未设立二级分行和一级支的一级分行，由一级分行对所辖网点至少（）检查一次。

A.每年

B.每半年

C.每季度

D.每月

腔静脉穿刺置管术的适应证有哪些？

如果用表示Z1表示测量阻抗，Z2表示整定阻抗，Z3表示动作阻抗。线路发生短路，不带偏移特性距离保护动作，则说明（）。

A.|Z3|<|Z2||Z2|<|Z3|

B.|Z3|<|Z2||Z1|<|Z2|

C.|Z3|<|Z2||Z2|<|Z1|

D.|Z3|<|Z2|Z2|<|Z1|