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【单选题】
见质点运动学习题第7题
A.
见质点运动学习题第7题A
B.
见质点运动学习题第7题B
C.
见质点运动学习题第7题C
D.
见质点运动学习题第7题D
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参考答案:
举一反三
【单选题】You must show your receipt______you want to get your bag.
A.
if
B.
till
C.
though
【单选题】If you want to get a high score you must first______.
A.
gain the skills of using your guns
B.
wipe out a score tanks
C.
hunt a number of enemy's saucers
D.
kill some supertanks or missiles
【单选题】________, please try your best to solve the problem in time.
A.
Ought you get into trouble
B.
Must you get into trouble
C.
Can you get into trouble
D.
Should you get into trouble
【单选题】If you want to get a ------- on your purchase, you must present a copy of the original receipt along with the product.
A.
refund
B.
registration
C.
purchase
D.
limit
【单选题】若视觉观察未发现来船或其目标,但雷达显示有回波,则应()。
A.
认为是假回波
B.
调整增益和干扰抑制将回波消除
C.
假设不存在碰撞危险
D.
假设存在碰撞危险
【单选题】If you meet troubles in your life, you must try to _________the troubles.
A.
turn over
B.
get over
C.
look over
D.
come over
【单选题】You must _____ your studies and get ready for the college entrance examinations.
A.
concentrate on
B.
centre in
C.
devote to
D.
devoted to
【判断题】前照灯近光灯丝位于反射镜的焦点
A.
正确
B.
错误
【判断题】前照灯近光灯灯丝位于焦点上。
A.
正确
B.
错误
【多选题】绿色材料具有什么特点?
A.
易于采集
B.
可降解
C.
可循环利用
D.
对人体和环境无害
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