（）是我国对证券投资基金的一种本土化创新。A．收入型基金 B．上市开放式基金 C．公

下列对逆转录酶的叙述中正确的是

A．具有RNA酶活性

B．属依赖RNA的DNA聚合酶

C．具有RNA聚合酶活性

D．催化1～2dNTP为原料合成双链DNA

（6分）下已知A~K均为中学化学中的常见物质，它们之间的转化关系如下图所示，其中A、D为金属单质，反应过程中生成的水及其他部分产物已略去。

请回答以下问题：

（1）E中阳离子的结构示意图为                    。

（2）CO₂的电子式为                        。

（3）向F中通入足量CO₂生成K的离子方程式                                 。

（4）写出H在空气中生成I的化学方程式                                     。

办理可循环应收账款池融资时，池内应收账款的融资比例最高不得超过票面金额的（），且每个进口商对应的应收账款融资比例不得超过票面金额的（）。

A.70%；80%

B.80%；70%

C.70%；70%

D.80%；80%

Bush’s MBA

Twenty-six of 42 presidents, including Bill Clinton, were lawyers. Seven were generals. George W. Bush becomes the first with an MBA.
Those who have had Bush for a boss since the mid-1980s—in the (1) of oil, baseball and Texas state government—describe his management (2) as straight from the pages of the organizational-behavior (3) he studied while getting his masters of business administration (4) at Harvard University in 1975.
He manages by what is known (5) "walking around," having learned that sitting behind a desk and passing out memos does (6) to energize anyone.
He has a reputation for fueling "creative tension" (7) his subordinates, encouraging them to take and defend opposing (8) . That sacrifices harmony, but puts ideas to the test and lets Bush (9) above the fray, where he can offer guidance instead of barking (10) . Imagine the creative tension that may erupt (11) the likes of Secretary of State-designate Colin Powell and Defense Secretary— (12) Donald Rumsfeld.
Above all, former employees say that he is a master at delegating (13) installing measures of accountability—ways of knowing (14) subordinates are getting the job done without looking (15) any shoulders. That frees Bush for strategic thinking—perhaps (16) two words hammered into MBA students most—which means thinking (17) to seize opportunities and to derail threats to the best of plans.
"George was my (18) ," says Tom Schieffer, who served as president of the Texas Rangers under Bush (19) 1991 and 1995. "But he never made me feel that way. He went out of his way to treat me as a (20) , not a subordinate."
That’s one trait that might be of concern, says Michael Useem, director of the Wharton Center for Leadership and Change at the University of Pennsylvania. It’s important for subordinates to feel part of the team, but not just because the boss craves popularity. Just as in the military, it must be understood who is in charge when the final order is given.

保安服务具有（）的特点。

A：特许性

B：契约性

C：防范性

D：风险性

E：有偿性