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问题 选择题

    淮阳中学（35°N，115°E）一学生对太阳能热水器进行了改造（如下图），把热水器装在一个大玻璃箱中，并将支架改造成活动方式。据此回答1—3题。

 

1、9月23日，为使热水器有最好的效果，调节支架使热水器吸热面与地面的夹角应为 [ ]

A、23.5°　

B、35°

C、55°　　

D、66.5°

2、当a调到最大时，淮阳 [ ]

A、白昼最长

B、正午太阳高度最低

C、物体影子最短

D、月平均气温最高

3、一年中，角a由小变大的时间是 [ ]

A、春分到夏至

B、夏至到秋分

C、春分到秋分

D、冬至到夏至

答案

1、B

2、B

3、B

单项选择题

When anyone opens a current account at a bank, he is lending the bank money. He may (1) the repayment of the money at any time, either (2) cash or by drawing a check in favor of another person. (3) , the banker customer relationship is that of debtor and creditor who is (4) depending on whether the customer’s account is (5) credit or is overdrawn. But, in (6) to that basically simple concept," the bank and its customer (7) a large number of obligations to one another. Many of these obligations can give (8) to problems and complications but a bank customer, unlike, say, a buyer of goods, cannot complain that the law is (9) against him.

The bank must (10) its customer’s instructions, and not those of anyone else. (11) , for example, a customer opens an account, he instructs the bank to debit his account only in (12) of checks drawn by himself. He gives the bank (13) of his signature, and there is a very firm rule that the bank has no right or (14) to pay out a customer’s money (15) a check on which its customer’s signature has been (16) . It makes no difference that the forgery may have been a very (17) one, the bank must recognize its customer’s signature. For this reason there is no (18) to the customer in the practice, (19) by banks, of printing the customer’s name on his checks. If this (20) forgery, it is the bank that will lose, not the customer.

15（）

A.by

B.on

C.with

D.for
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单项选择题

（）线形三要素是由直线、圆曲线和缓和曲线组成

A.平面

B.曲面
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