第16～25小题，要求判断每题给出的条件(1)和(2)能否充分支持题干所陈述的结论．

患儿，女性，5岁，因右下肢跛行3年而入院。患儿2岁方学会走路，当时被发现右下肢行走不稳，升降步态，无外伤史。体检：体温36．5℃。右下肢无红肿、无压痛，下肢肌力正常，皮肤感觉正常，右髋关节屈伸正常，外展稍受限，其余关节活动正常。Allis征（＋），Trendelenburg试验（＋），X线摄片示：右Shenton线不连，髋臼指数50°，股骨头位于Perkin方格的外上象限，且发育差，变小，但密度正常，前倾角80°，臼头无破坏，颈干角140°。

对此患儿，拟如何实施治疗（）

A.立即切开复位及髋臼成形术

B.手法整复，蛙式石膏固定

C.先保守治疗9个月，若无效再酌情行单纯切开复位

D.手法整复，特制Rosen夹架制动

E.先松解髂腰肌及内收肌，将股骨头牵引至髋臼水平，再行切开复位，髋臼成形术（即Penberton手术）

F.还须行股骨旋转截骨术，以矫正股骨颈前倾角

G.亦可行其他髂骨截骨术，如Salter截骨术或Chiari内移截骨术

H.拟行股骨分叉截骨术

Cullen Casket Company is considering a project that requires a $175000 cash outlay and is expected to produce cash flows of $65000 per year for the next four years. Cullen’s tax rate is 40 percent and the before-tax cost of debt is 9 percent. The current share price for Cullen stock is $32 per share and the expected dividend next year is $1.50 per share. Cullen’s expected growth rate is 5 percent. Cullen finances the project with 70 percent newly issued equity and 30 percent debt, and the flotation costs for equity are 4.5 percent. What is the dollar amount of the flotation costs attributable to the project, and that is the NPV for the project, assuming that flotation costs are accounted for correctly Dollar amount of floatation costs NPV of project（）①A. $5513 $30510 ②B. $5513 $32872 ③C. $7875 $32872

A. ①

B. ②

C. ③

下列有关节理的叙述哪项是不正确的？（）

A.断裂后两侧岩块具显著位移的断裂构造即节理

B.由张应力形成的节理即张节理

C.由剪应力形成的节理即剪节理

D.内、外力地质作用均可使岩层产生节理

每年征兵日以前年满十八周岁的男性公民，应当被征集服现役。