皮皮学，免费搜题
登录
搜题
【单选题】
红宝石的密度为（ ）g/cm3A.
2.65
B.
2.72
C.
3.32
D.
4.0
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】将粉状脱氧剂如C粉、Fe-Si粉、CaSi粉、Al粉加到炉渣中,降低炉渣氧含量,使钢液的氧向炉渣扩散,从而降低钢液氧含量的脱氧方法,称为: 。
A.
沉淀脱氧
B.
真空脱氧
C.
扩散脱氧
【单选题】Which of the following statement is true according to the passage?
A.
35% of technical reports published in scientific journals are written by scientist's doing their research in America
B.
35% of all scientific journals are issued by American scientific societies.
C.
35% of all scientists come from America
D.
35% of all scientists are doing research at American institutions.
【单选题】I was born in Japan, but I have ____ Chinese citizenship.
A.
retained
B.
represented
C.
reported
D.
required
【单选题】The author of this passage is most likely to be ______ .
A.
a biologist
B.
an athlete
C.
a reporter
D.
a sailor
【单选题】If a syllabus 15 organized around communicative function ,such as identifying, reporting ,correcting and describing ,we call it a _________syllabus.
A.
situational
B.
functional
C.
structural
D.
notional
【单选题】______ was not the way the happened.
A.
Which the press reported
B.
That the press reported
C.
What did the press report
D.
What the press reported
【单选题】“I am fuming with anger.”该句包含的愤怒隐喻是______？
A.
愤怒是火
B.
愤怒是容器中热的气体
C.
愤怒是危险的动物
D.
愤怒是暴风雨
【单选题】What is the purpose of this notice?
A.
To inform. employees of a rescheduled
B.
To report on the achievement of an employee
C.
To announce the release of a new product
D.
To introduce a new engineer to the staff
相关题目：
【单选题】将粉状脱氧剂如C粉、Fe-Si粉、CaSi粉、Al粉加到炉渣中,降低炉渣氧含量,使钢液的氧向炉渣扩散,从而降低钢液氧含量的脱氧方法,称为: 。
A.
沉淀脱氧
B.
真空脱氧
C.
扩散脱氧