题目内容

新队章增加了入队誓词的条款,具体内容是:我是中国少年先锋队队员。我在队旗下宣誓:我热爱中国共产党,热爱祖国,热爱人民,好好学习,准备着:为共产主义事业贡献力量!

A. 正确
B. 错误

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幻灯片在放映过程中终止放映的按()键。

A. Ctrl
B. Alt
C. Del
D. ESC

当前高温医学研究存在的主要问题是什么?

Excessive air leakage into the suction side of a centrifugal pump would be indicated by which of the following operational problems?()

A. The pump delivers full capacity when started, but gradually slackens off toan abnormally low flow
B. The pump packing gland overheats after short operating periods
C. The motor over-current protective device continually shuts the pump down
D. Pounding noises can be heard at the pump suction chest

往复式压缩机气缸内留有一定的内、外止点间隙,是为了克服气缸与活塞热膨胀不一致,避 免活塞端面与气缸端面发生碰撞。

A. 正确
B. 错误

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