在乐谱中，（）的作用是用以划分节奏重音的单位规律的记号。

综合填空（本大题共10小题，每小题1分，共10分）

根据短文内容及首字母提示，填写所缺单词，使短文意思完整，没空限填一词。

On July2, 1937, Amelia Earhart( an American pilot) and Fred Noonan left New Guinea for Howland Island in the Pacific. This was the longest and most dangerous part of their t 小题1:   around the world. Earhart had trouble soon after the plane took off. The weather was very bad, so she had to f小题2: at 3,000 metres. Going this high, the plane used fuel quickly.

After about 20 h  小题3: , Earhart and Noonan got close to Howland Island. The island was o 小题4: about 65 miles (英里) away, but the bright sun was shining in their faces so they couldn’t see it. Near Howland, a ship was w 小题5:  for the plane. Earhart contacted the ship: “We don’t have enough fuel,” she said. The ship tried to stay in touch with her b 小题6:  got no answer. Finally, the ship called for help. People looked for Earhart and Noonan for days. However, they found nothing.

What happened to Amelia Earhart? No one knows for sure. D 小题7:  the flight, she probably moved in the wrong direction(方向) because the sun was bright and it was d 小题8:  to see. So she got lost; soon after, her plane ran out of fuel, and she died at sea. Another idea is that she survived(幸存) the plane crash(飞机失事), s 小题9:  to a lonely island, and later died there. Still other think she survived the crash and secretly returned to the U.S. with a new identity(身份).

Till now, none of these i 小题10:  has been proved. People are still wondering about them. (Noonan’s body has never been found either.) No matter what happened, Earhart probably died as she wished. “When I go,” she said, “I’d like best to go in my plane.”

颈后三角区分为______、______。

材料分析和核算是企业成本分析、制定（）措施的依据。

A、材料管理

B、降低成本

C、材料堆放

D、材料分类

甲公司是一家设备制造企业，常年大量使用某种零部件。该零部件既可以外购，也可以自制。如果外购，零部件单价为100元／件，每次订货的变动成本为20元，订货的固定成本较小，可以忽略不计。如果自制，有关资料如下：（1）需要购买一套价值为100000元的加工设备，该设备可以使用5年，使用期满无残值。（2）需要额外聘用4名操作设备的工人，工人采用固定年薪制，每个工人的年薪为25000元。（3）每次生产准备成本为400元，每日产量为15件。（4）生产该零部件需要使用加工其他产品剩下的一种边角料，每个零部件耗用边角料0．1千克。公司每年产生该种边角料1000千克，如果对外销售，单价为100元／千克。（5）除上述成本外，自制零部件还需发生单位变动成本50元。该零部件的全年需求量为3600件，每年按360天计算。公司的资金成本为10％，除资金成本外，不考虑其他储存成本。

判断甲公司应该选择外购方案还是自制方案，并说明原因。

先兆子宫破裂的临床表现有哪些？