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【单选题】
当空间的直线平行于投影面时,则投影面上的投影______。A.
集聚成一点
B.
反映实长
C.
为伸长的直线
D.
为缩短的直线
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】单词填空。 1. Fresh fruit and vegetables c_______ plentiful Vitamin C. 2. Very few people s________ in losing weight and keeping it off. 3. It wouldn't do you any h________ to get some experience first. 4....
【简答题】在海关人员( customs officers )用手提扫描仪( portable scanner )搜身时,他站着,双手伸开。
【单选题】[8-24]___should ensure that adequate measures are taken to prevent alcohol and drugs from impairing the ability of watch keeping personnel.政府应确保采取足够措施禁止酒精和毒品对值班驾驶员值班能力的损害。
A.
The quarantine officers 检疫官员
B.
Administratons 政府
C.
The immigration officers 移民局官员
D.
The customs officers 海关官员
【单选题】Customs officers(海关人员) have the right to check all____.
A.
homework
B.
luggage
C.
garage
D.
fashion
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