下列说法中正确的是 [ ] A.有且只有一条直线垂直于已知直线 B.从直线外一点

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问题:

下列说法中正确的是 [ ]

A.有且只有一条直线垂直于已知直线

B.从直线外一点到这条直线的垂线段,叫做这点到这条直线的距离

C.互相垂直的两条线段一定相交

D.直线c外一点A与直线c上各点连接而成的所有线段中最短线段的长是3cm,则点A到直线c的距离是3cm

考点:垂直的判定与性质直线,线段,射线
题型:选择题

当y=-3时,二元一次方程3x+5y=-3和3y-2ax=a+2(关于x,y的方程)有相同的解,则a=______.

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个体对紧张刺激的一种非特异性的适应性反应,称为()

A.反射

B.顺应

C.应对

D.自我控制

E.应激

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民用航空气象人员执照技能考核合格证有效期为()年。

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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.

2()

A.for

B.through

C.as

D.in

题型:选择题

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