基金季度报告的投资组合报告需要披露的有( )。 A．前10名股票明细和前5名债券明

用绳AC和BC吊起一重物处于静止状态，如图所示． AC绳与竖直方向夹角37°，BC绳与竖直方向夹角为53°，g取10 m/s²，sin37°=0.6，sin53°=0.8

求：（1）当所挂重物质量为4kg时，两绳子所受拉力多大？

（2）若AC能承受的最大拉力为50N，BC能承受的最大拉力为40N，为使两绳不断，则所挂物体质量不能超过多少？

In the second half of each year, many powerful storms are born in the tropical Atlantic and Caribbean seas. Of (91) , only about half a dozen (92) the p, circling winds of 75 miles per hour or more that give them hurricane status, and several usually (93) their way to the coast. There cause millions of dollars of (94) , and bring death to (95) numbers of people.
The great storms that hit the coast start (96) innocent circling disturbances hundreds, even thousands of miles out to sea. As they travel aimlessly over water (97) by the summer sun, they are carried westward by the (98) winds. When conditions are just (99) , warm, moist air flows in (100) the bottom of such a disturbance, moves upward through it and comes out at the top. In the (101) , the moisture in this warm air produces rain, and with it the heat is converted to energy in the form of p winds. As the heat increases, the (102) hurricane begins to swirl in a counter-clockwise motion.
The average life of a hurricane is only about nine days, but it contains almost (103) power than we can imagine. The energy in the heat released by a hurricane’s rainfall in a(n) (104) day would (105) the entire electrical needs of the United States for more than six months. Water, not wind, is the main (106) of death and destruction in a hurricane. A(n) (107) hurricane brings 6-to 12-inch downpours (108) in sudden floods. (109) is the powerful movement of the sea-the mountains of water moving toward the low-pressure hurricane center. The water level (110) as much as 15 feet above normal as it moves toward shore.

A．cooled

B．boiled

C．steamed

D．warmed

卵巢浆液性囊腺瘤的声像图特点是（）①伴有腹水②分隔及壁上见菜花状 * * ③菜花状 * * 穿破囊壁向外生长④囊壁或隔膜或 * * 上可见动脉血流，且RI<0.5

A.①

B.①②

C.①②③

D.①②③④

E.①③④

某外资企业2010年度的经济业务相关资料如下(该省规定按照房产税原值一次扣除20%后的余值计税，城镇土地使用税税额为5元/平方米，当地载客汽车车船税每年每辆60元)：
(1)年初购入办公楼一栋，面积200平方米，价值400万元。其中价值100万元的部分用作企业办医院。
(2)拥有土地1000平方米，其中绿化占地500平方米。绿化占地面积中有60%为街心花园，并向周围居民开放。
(3)企业将临街厂房的一间小屋出租给李某开超市使用，月租金为2000元。
(4)企业3月购入载客汽车5辆，其中1辆专属幼儿园使用，1辆专属某小学使用。

该企业应纳车船税为( )元。

A．240

B．180

C．300

D．400

（）是使用抗生素杀菌剂进行防治存在的问题。

A、污染环境

B、专化性强

C、毒性高

D、用量大