皮皮学，免费搜题
登录
搜题
【简答题】
环境科学领域为什么要进行抽样?
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
【判断题】To pronounce /n/ and /ŋ/, we both need to raise our tongue tip to the roof of the mouth.
A.
正确
B.
错误
【单选题】The company _____ we worked 3 years ago has grown into one of the biggest companies in our country. [ ]
A.
that
B.
when
C.
in which
D.
which
【简答题】As a leading producer of spare parts for airplanes, our company is a long way ______ other companies.
【单选题】Our company has been bought by one of the biggest _____ companies in the world.
A.
subjective
B.
constant
C.
ultimate
D.
multinational
【简答题】板、次梁、主梁的常用跨度是多少?
【简答题】简述21-三体综合征的发病机制。
【简答题】21-三体综合征标准型核型（ ）|21-三体综合征D/G易位型核型（ ）|21-三体综合征G/G易位型核型（ ）|21-三体综合征嵌合型核型（ ）A. 47，XY(XX)，+21B. 46，XY(XX)/47，XY(XX)，+21C. 46，XY(XX)，-14，+t(14q21q)D. 46，XY(XX)，-21，+t(21q21q)E. 46，XY(XX)，-21，+t(21q22q)
【单选题】It is 3 years _______ one of the big companies used our delivery company.
A.
before
B.
after
C.
since
D.
when
相关题目：