蝶式套利中近期月份合约、居中月份合约和远期月份合约的数量应相等。（）
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The faster way to travel in a city is by subway. In many big cities, there 1 usually more than one subway lines. How to travel by 2 ? Here is something to know 3 you travel by subway. First, you should choose the right line. If you don't, you will have to get off and take 4 one. Second, you need some coins (硬币) to buy your 5 . In 6 of the ticket machines, only coins are used. You can change (换) 7 at the ticket office. If you have a prepaid (预付款) card, you can just go ahead. After you buy the ticket, you should 8 the train behind a yellow line. You 9 stand too close to the yellow line. It's 10
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心脏按压的方法不正确的是（）
A.小婴儿按压可用双手环抱压胸骨中1／3处
B.对幼儿抢救者可单手按压胸骨下1／3
C.对10岁以上儿童抢救者双手按压胸骨下1／3处
D.对小婴儿心脏按压每分钟应按压140次
E.对学龄儿童心脏按压每分钟应按压100次
公共场所的选址、设计、装修应当符合（）的要求。
A.国家标准
B.标准和规范
C.国家规范
D.国家相关标准和规范
任何存款人不可以在一家金融机构或多家金融机构开立两个或两个以上的（）。
A、一般存款户
B、基本存款账户
C、临时存款账户
D、协定存款账户
选择适当大小的网格是网格制图的关键，最好选择两种以上能被标准分幅的（）地籍图图幅边长整除的网格。
A.1：500
B.1：1000
C.1：1500
D.1：2000