皮皮学，免费搜题
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【多选题】
已知99年出版了一本书,若想找到该书电子版并下载到本地计算机,不应在下列哪个数据库中查找( )A.
维普期刊数据库
B.
报刊资料全文数据库
C.
超星数字图书馆
D.
万方数据资源系统
E.
复印报刊资料全文数据库
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】I've brought some sandwiches _____ we get hungry.
A.
for
B.
so that
C.
for fear
D.
in case
【单选题】On our way back home, we _______ lunch because we felt hungry.
A.
stopped to have
B.
stop to have
C.
stopped having
D.
stoped to have
【单选题】There was ________ left, so we went hungry.
A.
little food
B.
a little food
C.
little foods
D.
a little foods
【单选题】如图所示电路 中,通过电源的等效变化化简成 ---电流源与电阻并联的电路,其等效参数 , 分别为( )
A.
1A,5Ω
B.
1A,10Ω
C.
2A,5Ω
D.
2A,10Ω
【简答题】节流阀通常采用薄壁小孔,其原因是通过它的流量与( )无关。
【简答题】用am, are, is填空。 1. I hungry. 2. He a teacher. 3. How much the gs? 4. We a happy family.
【简答题】节流阀通常采用薄壁小孔,其原因是通过它的流量与 无关,使流量 受 的变化较小。
【简答题】On our way to the building site, we ______ lunch because we felt hungry.A. stopped tohaveB. stop tohaveC. stoppedhavingD. stop having
【单选题】- I'm hungry. Is there any bread in the fridge? but we have cakes. Would you like to have one? [ ]
A.
Some
B.
Much
C.
None
D.
Nothing
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