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【单选题】Los Alamos National Laboratory scientists are using a new technique to see fingerprints on suces that typically make them invisible. The method uses a technology called mini-X-ray fluorescence (荧光)...
A.
The chemicals of adolescent prints disappear within a shorter time.
B.
It takes a longer time to detect the chemicals of adolescent prints.
C.
It is more difficult to determine the chemicals of adolescent prints.
D.
The adolescent prints contain fewer useful chemicals for research.
【单选题】Mr.Tuner had been a captain for many years. He was good at shooting (射击). In the army he taught new soldiers to shoot. Then he left the army and began to work in a bank as a night watchman. He worked ...
A.
The young man was good at shooting.
B.
Mr.Turner liked the young man very much.
C.
Mr.Turner disliked the young man.
【单选题】Mr.Tuner had been a captain for many years. He was good at shooting (射击). In the army he taught new soldiers to shoot. Then he left the army and began to work in a bank as a night watchman. He worked ...
A.
Worked as a guard.
B.
Worked as a driver.
C.
Worked as a teacher.
相关题目：
【多选题】射击弹头上的痕迹有：（）。
A.
弹头部的磕碰痕迹
B.
拔弹痕迹
C.
坡膛痕迹
D.
线膛痕迹
【多选题】清除残留物的吞咽方式有（）。
A.
小口吞咽
B.
侧方吞咽
C.
大口吞咽
D.
空吞咽与交互吞咽
E.
点头样吞咽
【单选题】对空射击通常利用土堆(坟包)的( )
A.
后侧
B.
左侧
C.
顶端
D.
AC正确
【单选题】“某人射击一次,中靶”是
A.
随机事件
B.
必然事件
C.
不可能事件
【单选题】灰烬是指可燃物在火灾作用下的（）残留物。
A.
固体
B.
液体
C.
气体
D.
晶体
【单选题】8次射击,命中3次,其中恰有2次连续命中的情形有________种.( )
A.
15
B.
30
C.
48
D.
252
【单选题】Los Alamos National Laboratory scientists are using a new technique to see fingerprints on suces that typically make them invisible. The method uses a technology called mini-X-ray fluorescence (荧光)...
A.
The chemicals of adolescent prints disappear within a shorter time.
B.
It takes a longer time to detect the chemicals of adolescent prints.
C.
It is more difficult to determine the chemicals of adolescent prints.
D.
The adolescent prints contain fewer useful chemicals for research.
【单选题】某人射击8枪，命中4枪，命中4枪中恰好有3枪连在一起的情况共有多少种（）
A.
10
B.
14
C.
16
D.
20
【单选题】瞄准∶射击
A.
闪电∶下雨
B.
学习∶进步
C.
打铃∶下课
D.
入水∶游泳
【单选题】Mr.Tuner had been a captain for many years. He was good at shooting (射击). In the army he taught new soldiers to shoot. Then he left the army and began to work in a bank as a night watchman. He worked ...
A.
The young man was good at shooting.
B.
Mr.Turner liked the young man very much.
C.
Mr.Turner disliked the young man.
【单选题】Mr.Tuner had been a captain for many years. He was good at shooting (射击). In the army he taught new soldiers to shoot. Then he left the army and began to work in a bank as a night watchman. He worked ...
A.
Worked as a guard.
B.
Worked as a driver.
C.
Worked as a teacher.
【单选题】1米以外的射击为
A.
远距离射击
B.
接触射击
C.
贴近射击
D.
近距离射击
【单选题】煤的（）是指煤完全燃烧后残留物的产率。
A.
挥发分
B.
灰分
C.
硫分
D.
发热量