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【单选题】
完成被截切圆锥的三面投影。选出正确答案。A.
（1）
B.
（2）
C.
（3）
D.
（4）
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举一反三
【单选题】A new study suggests that the energy _____ by a cell phone could activate your brain. [ ]
A.
given away
B.
giving off
C.
given off
D.
giving out
【简答题】管理子系统由交连、__________和__________组成。
【简答题】D Holding a cell phone against your ear or storing it in your pocket may be erous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ign...
【单选题】Warning: Holding a cell phone against your ear or storing it in your pocket may be hazardous to your health. This paraphrases a warning that cell phone manufacturers include in the small print that is...
A.
tossed off
B.
tossed about
C.
tossed aside
D.
tossed down
【简答题】看图，并为图选择正确的句子。 ① Touch your eye. ② Touch your head. ③ Touch your ear. ④ Touch your mouth. ⑤ Touch your face. ( ) ( ) ( ) ( ) ( )
【简答题】管理子系统由交连、互联和 I/O 组成,其主要设备是 _________ 、交换机和 _________ 、电源.
【简答题】C Holding a cell phone against your ear or storing it in your pocket may be erous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ign...
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