下列选项中，（）会导致屏蔽泵杨程不足。A.叶轮损坏 B.汽蚀 C.泵体过热 D.口环

阅读理解。

     Without Doubt, Miley Cyrus reigns as Hollywood's "tween" queen. Her show, Hannah Montana, debuted

in 2006 as the number one cable show look kids aged 6-14. Add to that success two chart-topping CDs, a

sold-out concert tour and a number one movie. And she's not even 16 years old yet!

     Born in 1992 in Tennessee, Miley is the daughter of country singer-turned-actor, Billy Ray Cyrus and his

wife, Tish, Miley got an early start in acting,beginning with a small role on her father's TV show in 2003.

Then at age 12, Miley's cool confidence helped her beat out 1,000 other girls to win the role of Hannah

Montana.

     On the Disney Channel show, Miley plays Miley Stewart, a sometimes-awkward ninth grade girl who

moonlights (做兼职) as pop sensation Hannah Montana. Stewart keeps her rock star identity a secret from

all but her family and her closest friends. The show emphasizes family,friendship and respect, making it a hit

not only with kids but also with adults. Miley's real father plays her dad on the show. In June 2007, Miley

released the two-disc album Hannah Montana 3/Meet Miley Cyrus. One disc contains songs from the show.

And the other serves as the star's Debut album-with songs about love, teenager life and growing up. In

October, Miley set out on a 54-date North American concert tour. The tour were wildly popular-tickets for

some venues sold out within minutes and 14 extra performances were added.

     The tour's success spurred Disney to create a 3-d movie version of the concert. The film hit number one

at the box office and earned over $31 million in just three days.

     Though Miley is a huge star, she sees herself as a regular girl. She attends church with her family every

week and does homework and household chores.

     With a big-screen version of Hannah Montana coming out next year,this young star is sure to keep

rising-but with her feet on the ground.

1. Which of the following is NOT true except the fact that _____.

A. Miley began to act at the age of 12

B. Miley's 54-date North American concert tour was very successful

C. Miley's show,Hannah Montana was popular with not kids but adults

D. Miley is a regular and grounded girl

2. What helped Miley win the role of Hannah Montana? 

A. Her father.

B. Her success.

C. Her closest friends.

D. Her cool confidence

3. The underlined word "debuted'' in the first paragraph means _____.

A. appeared

B. came out

B. played

D. first appeared

在图a)电路中有电流I时，可将图a)等效为图b）,其中等效电压源电动势E_s和等效电源内阻R₀分别为（）。

A.-1V,5.143Ω

B.1V,5Ω

C.-1V,5Ω

D.1V,5.143Ω

对集团内核心成员的人数要求，下面哪些描述正确？（）

A.要求A+集团不少于10人

B.A1类集团不少于5人

C.A2类不少于10人

D.B1类不少于2人

E.B2类不少于5人

2007年3月，美国乙公司拟收购境内甲公司60%的股权，甲公司变更为中外合资经营企业(下称“丙公司”)。双方拟订的收购方案的有关要点如下： (1)改组前的甲公司注册资本5000万元人民币。甲企业拟将60%的股权转让给乙公司，转让价款为450万美元；乙公司在中外合资经营企业营业执照颁发后半年内向甲企业支付250万美元，余款在2年内付清。 (2)丙公司成立后注册资本增加至1200万美元，投资总额拟为3300万美元。 (3)丙公司的经营期限为20年。经营期满后，丙公司的全部固定资产无偿归甲企业所有。在乙公司投资回收完毕之前，丙公司的收益按甲企业20% 、乙公司80%的比例进行分配。乙公司投资回收完毕后，甲企业与乙公司按出资比例分配收益。 要求：根据上述内容，分别回答以下问题： (1)乙公司向甲企业支付股权转让价款的期限是否符合规定并说明理由。 (2)丙公司的注册资本与投资总额的安排是否符合规定 (3)丙公司的收益分配方式是否符合规定并说明理由。

基于IPv4隧道的IPv6，将（）数据包封闭在（）数据包中。

A.IPv6；IPv4

B.IPv4；IPv6

C.IPv4；数据链路层

D.IPv6；数据链路层