Bing-Alexander畸形指（）。 A.内耳可完全未发育，有时颞骨岩部_爱下问搜题

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问题单项选择题 B1型题

Bing-Alexander畸形指（）。

A.内耳可完全未发育，有时颞骨岩部亦未发育，属常染色体显性遗传

B.耳蜗底周发育，第2周及顶周发育不全，耳蜗水管及内淋巴管前庭池也畸形

C.骨迷路发育正常，蜗管分化不全，主要病变在底周Corti器及螺旋神经节

D.先天性镫骨固定伴听骨链畸形

E.先天性镫骨固定

答案

参考答案：C

解析：1.Mondini畸形指耳蜗底周发育，第2周及顶周发育不全，耳蜗水管及内淋巴管前庭池也畸形2.Bing-Alexander畸形指骨迷路发育正常，蜗管分化不全，主要病变在底周Corti器及螺旋神经节3.第一类中耳畸形指先天性镫骨固定。

填空题

After its (1) to the (2) in 2001, China has taken steps towards opening up its (3) . As a condition for joining the WTO, China (4) itself to a (5) of trade liberalization, including the reduction of tariffs on cars and agricultural products. These tariffs reductions are both (6) and there is (7) for China to (8) at a faster pace.
A (9) of (10) and a more rapid and profound reduction of import tariffs would (11) of those Chinese consumers who would (12) imported products at lower prices. Second, a higher (13) into China would take away much upward pressure on the Renminbi and provide a true and lasting (14) to solving current global (15) . Indeed, even a modest (16) in the opening-up process would go a long way towards solving the problem.
The opening up of China’s markets to international competition should (17) deep reforms. Banks should be recapitalized, bad loans provisioned fully and state-owned companies’ runaway indebtedness (18) . Only when real progress in these areas is made should China begin to consider a reform to its (19) . Doing it any earlier would be highly (20) .

填空题

一般情况下，220kV变压器高低压侧均有电源送电时应由（）侧充电，（）侧并列。