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【单选题】
微机型变压器的零序方向电流保护其“零序方向指向”控制字为“1”其零序方向元件指向变压器,此时()A.
零序方向电流保护作为变压器接地的后备，其方向灵敏角为225度；
B.
零序方向电流保护作为变压器接地的后备，其方向灵敏角为75度；
C.
零序方向电流保护作为变压器及该侧母线接地的后备，其方向灵敏角为225度。
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【单选题】下列关于母乳喂养描述错误的是（）
A.
母亲患有活动性肺结核时不宜母乳喂养
B.
婴儿出生后可以立即吸吮
C.
断奶时间一般选择在春秋季节开始
D.
应定时进行哺乳
E.
哺乳后将婴儿竖起排背，以减少溢奶
【单选题】There are so many kinds of pens in the shop ,I can’t decide ______.
A.
when to buy
B.
where to buy
C.
what to buy
D.
which to buy
【单选题】下列关于母乳喂养描述 错误 的 是
A.
新生儿出生 60 分钟内应开始吸吮
B.
新生儿应定时进行哺乳
C.
哺乳时让婴儿先吸空一侧乳房，再吸吮另一侧
D.
哺乳后将婴儿竖起拍背，以减少溢奶
E.
断奶一般选择在春秋季天气凉爽时开始
【简答题】完形填空。 There is a shop near my home. It 1 many things like bread, milk, 2 and drinks. My mother often goes shopping there 3 Sundays and buy food. I go with her, too, and carry baskets 4 her. The people...
【单选题】There are so many kings of pens here. I can't decide _____. [ ]
A.
when to choose
B.
to choose which
C.
which one to choose
【简答题】Nowadays people don’t need to go out shopping. They can buy things with the help of the Internet and computers. People can buy everything online, including pens, books, clothes, furniture(家具),fruits, ...
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