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【判断题】
当工件以平面作为定位表面定位时，除采用主要支承外还可采用辅助支承，用来提高工件的装夹刚性和稳定性，不起定位作用。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】This doubt had been in my mind for some time, but the research still went on some reasons. [ ]
A.
to
B.
about
C.
for
D.
in
【简答题】The back of the form tells you how to ( ) your refund.
【单选题】This doubt had been in my mind for some time, but the research still went on____some reasons.A．to
A.
14．This doubt had been in my mind for some time, but the research still went on____some reasons. A．to
B.
about
C.
for
D.
In
【判断题】Jenny is required to attach the receipts for the main items to the back of the expenses claim form.
A.
正确
B.
错误
【单选题】孕 妇, 25岁,妊娠38周,枕先露,临产10小时,宫ロ开全18分钟,见“ 拨露 ”及流出的 羊 水 混浊,医 师即 钳 产, 娩 出一体重 2700g活男婴。该孕妇需 钳 产的原因是
A.
胎位不正
B.
胎儿窘迫
C.
潜伏期延长
D.
第二产程延长
E.
活跃期停滞
【简答题】Guests may write their ________________________ on the back of the form.
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