皮皮学，免费搜题
登录
搜题
【多选题】
下列引起系统风险的是( )A.
战争
B.
自然灾害
C.
经济衰退
D.
通货膨胀
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】[组合填空题] 比较器的参考电压 UR 越小,检测装置的灵敏度就越____(高/低)。若希望灵敏度不要太高,可将 RP 往____(左/右)调节。
【单选题】A lot of countries have gained excellent achievements in space technology, China, _____. [ ]
A.
such as
B.
for example
C.
namely
D.
that is
【简答题】The year 2006 was a busy one for space and technology workers. A planet lost its status and space flights caught the imagination of people around the world. The following is a short list of the major ...
【单选题】The space shuttle program entails the use of sophisticated technology.
A.
enhances
B.
develops
C.
creates
D.
involves
【单选题】If China’s space technology has achieved ____ breakthrough in this field, it really is ____ amazing wonder.
A.
the; an
B.
a; an
C.
不填; the
D.
a; 不填
相关题目：
参考解析：
知识点：
题目纠错 0
发布
