GB/T231.1-2009明确提出()压头为标准型布氏硬度压头。
A、硬质合金球
B、钢球
C、金刚石圆锥
D、都可以
参考答案:A
阅读下面短文,选择正确答案。
My name is Frank White. I'm fourteen years old. I was born on May 13th, 1992. Mike is my good
friend. His birthday is May 15th. He is only 12 years old now. Every year on May 14th,we have a
birthday party together (一起) at our school. We often have a pop concert. I play the guitar. He plays
the drums. Many friends come (来) to our party. We are very happy (高兴).
1. Frank's birthday is _____.
A. May 14th
B. May 13th
C. May 15th
D. May 16th
2. Mike was born _____.
A. on May 14th, 1992
B. on May 15th, 1994
C. on May 13th, 1994
D. on May 16th, 1992
3. _____ May 14th.
A. Frank's birthday is
B. Mike's birthday is
C. They have a basketball game on
D. They have a birthday party on
患者女性,22岁。14岁月经初潮。既往月经正常,半年前失恋,后一直未有月经来潮。患者主诉半年来情绪极度低落,不思饮食。妇科检查子宫和双附件未见异常。此患者基础的处理方案应是 ()
A.诱发排卵
B.进行心理疏导
C.雌孕激素人工周期替代疗法
D.补充多种维生素
E.孕激素周期性治疗