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【简答题】
无导向单工序冲裁模的特点是结构 ____________ ,制造成本低,但使用时安装调整凸、凹模间隙较 ____________ ,冲裁件质量 ____________ ,模具寿命 ____________ ,操作不安全。因而只适用于精度 ____________ 的冲裁件的冲压。
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举一反三
【单选题】Heavy smokers risk _____ their health greatly.
A.
to damage
B.
damaging
C.
damaged
D.
damage
【简答题】理论回答并解决了哪些基本问题
【简答题】理论回答并解决了哪些基本问题？
【多选题】Heavy smokers and drinkers run a fifteen-times greater risk of developing cancer of the mouth and throat than nonsmokers and nondrinkers.
A.
Cancer of the mouth and throat is more likely to occur in heavy smokers and drinkers than in nonsmokers and nondrinkers.
B.
People who never drink and smoke will not get mouth or throat cancer.
C.
Heavy drinkers who run have a greater risk of developing cancer than nondrinkers.
D.
People who don't smoke and drink have less chance of getting cancer of the mouth and throat than those who smoke and drink heavily.
E.
People would probably be healthier if they did not drink and smoke too much.
【单选题】Though many of the heavy smokers have realized the serious effect that smoking has ______ their health, they continue to smoke instead of ______.
A.
for; giving it up
B.
on; quitting
C.
to; abandoning
D.
on; leaving
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