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【单选题】
180 0 导电型电压型三相桥式逆变电路，任一瞬间有（）个桥臂同时导通，其换相是在同一、下桥臂之间进行,属（ ）。A.
二；纵向换流
B.
三；纵向换流
C.
二；横向换流
D.
三；横向换流
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【简答题】情景对话 Tom: Let's have hamburgers and chicken for lunch. Lucy: _1_ Tom: Then what do you like? Lucy: __ 2_ Tom: OK, Let's have hamburgers and salad. _3_ Lucy: I like bananas. Tom: _4 How about strawber...
【单选题】Lucy a short nose, but I a long one.
A.
have, have
B.
have, has
C.
has, have
D.
has, has
【单选题】Lucy and Simon have come to Garden City. This sentence means _____.
A.
Lucy and Simon have been to Garden City
B.
Lucy and Simon came to Garden City
C.
Lucy and Simon are coming to Garden City
D.
Lucy and Simon are in Garden City now
【单选题】—Do Lucy and Lily have a baseball? —Yes, ____ [ ]
A.
she does
B.
she has
C.
they do
D.
they have
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