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You should _______________ to one or more weekly magazines such as Time or Newsweek.

— What would you like to have, meat or fish?

— _____________________.

— ___________________

— Once or twice a week.

常用的低压电器是指工作电压在交流___V以下、直流___V以下的电器。1200、 1500
Whether we will go or not __________ the weather.
Which ________ do you prefer, coffee or orange juice?
常用的低压电器是指工作电压在交流___V以下、直流___V以下的电器。1200、 1500
Tables______ of stones or wood.
Do you feel like ________ to a film or would you rather ________ at home.
Without water, _________ no plants or animals.
I am wondering if they are ____ or____.
_________ in a person’s speech or writing usually ranges on a continuum from casual or colloquial to formal or polite according to the type of communicative situation.
淹溺指人淹没水里,由于______________或____________而造成窒息。
根据淹溺发生的机制不同,淹溺可有两种情况:______、______。
淹溺的院内治疗包括______、______、______、______。
固体介质直流击穿电压较交流击穿电压_______。
直流电动机的电势Ea比端电压U(大小),电磁转矩T与转速n方向_____,Ia与Ea方向_____。
低压电器通常是指在交流额定电压1200V、直流额定电压_______V及以下的电路中起通断、保护、控制或调节作用的电器产品。
在发生人身触电事故时,为了解救触电人,可以________,即行断开________但事后必须________。
Many boys enjoy _______ football, basketball or baseball
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