题目内容

特异性免疫是生来就具有的免疫力,可以遗传给后代。

A. 正确
B. 错误

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在钻床上不能完成()加工任务。

A. 钻孔
B. 扩孔
C. 铰孔
D. 镗孔

在“帷幄有神筹,几见圮桥杰竖”中,“帷幄”之义为()

A. 床帷
B. 军帐
C. 门帘
D. 屏风

转向桥是利用()使车轮可以偏转一定角度,以实现()。

New Zealand is the first country in the world to get the new day because()

A. it is just east of the International Date Line
B. it is just west of the International Date Line
C. it is located halfway between the equator and the South Pole
D. it is located in the Southern Pacific Ocea

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