不满()周岁的人违反治安管理的,不予处罚,但是应当责令其监护人严加管教。
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流体以层流流态换热强度要强于湍流流态强度
A. 正确
B. 错误
利用细胞质壁分离现象,可以判断细胞(),测定细胞的()。
Which of the following statements concerning fire-tube boilers is correct?()
A. Combustion gases flow through the tubes
B. Flames impinge on the tubes
Combustion occurs in the tubes
D. Water flows through the tube