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【简答题】
盒子里共放10个球,任意摸2个,一定能摸出2个红球。(在盒子里放球)
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举一反三
【简答题】在 A 点量取经纬仪高度 i=1.400m ,望远镜照准 B 点标尺,中丝、上丝、下丝读数分别为 v=1.400m,b=1.242m,a=1.558m,α=45° ,试求 A 、 B 两点间的水平距离 D 和高差 h 。
【简答题】在A点量取经纬仪高度i=1.400m,望远镜照准B点标尺,中丝、上丝、下丝读数分别为v=1.400m,b=1.242m,a=1.558m,α=3°27 ́,试求A、B两点间的水平距离和高差。
【单选题】Make( )copies of important files, and store them on separate locations to protect your information.
A.
back
B.
back-up
C.
back-out
D.
background
【单选题】HBVDNA定量达多少以上可以提示复制活跃
A.
107copies/ml
B.
106copies/ml
C.
106copies/ml
D.
108copies/ml
E.
104copies/ml
【单选题】甲基化反应供给甲基的是:
A.
7,8- 二氢二醇
B.
甘氨酸
C.
S- 腺嘌呤蛋氨酸
D.
GST
E.
二醇环氧化物
【判断题】Copies of your important documents and credit card should be kept in another bag.
A.
正确
B.
错误
【多选题】Which measures are suggested in the video of unit 15 when you need to make copies of your learning materials?
A.
Manage to get digital copies.
B.
Remember the content instead of print it.
C.
Print on both sides of the paper.
D.
Borrow other students' copies.
【单选题】导游人员职业道德规范中的( )是导游员必须遵守的一项道德规范,也是社会各行各业都必须遵守的基本行为准则
A.
耐心细致,文明礼貌
B.
爱国爱企,自尊自强
C.
团结协作,顾全大局
D.
克勤克俭,游客至上
【单选题】I would appreciate very much if you could send me a few copies of the mechanic design of your new model.
A.
it
B.
that
C.
this
D.
you
【多选题】在A点量取经纬仪高度i=1.400m,望远镜照准B点标尺,中丝、上丝、下丝读数分别为v=1.400m,b=1.785m,a=1.015m,竖直读数为60°,则下列说法正确的有(),数字取位至cm
A.
竖直角为+30°
B.
平距为57.75m
C.
视距斜长(斜距)为77.00m
D.
高差等于33.34m
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