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【多选题】
三相笼型异步电动机常用的减压起动方法有 ( )。A.
延边三角形减压起动
B.
定子串电阻（或电抗）减压起动
C.
星形—三角形减压起动
D.
定子串自耦变压器减压起动
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反馈参考答案：
举一反三
【多选题】以下属于特殊杂质检查的是()。
A.
重酒石酸去甲肾上腺素中的酮体的检查
B.
对乙酰氨基酚的酸度检查
C.
硫酸沙丁胺醇中有关物质的检查
D.
盐酸普鲁卡因的炽灼残渣检查
E.
对乙酰氨基酚乙醇溶液澄清度的检查
【单选题】Nowadays，it is common to see people staring at their mobile phones instead of reading a real book，＿＿＿＿＿＿many experts are worried．
A.
when
B.
for which
C.
where
D.
about which
【判断题】Nowadays, Chinese wedding can be held in a big restaurant instead of in the groom’s home.
A.
正确
B.
错误
【简答题】Nowadays, instead of paying with cash, cheque, or credit cards, a consumer can use a cell phone to pay for a wide range of products and services. With mobile payment technology, people can also send m...
【简答题】返回x的y次幂的函数是 _________
【单选题】Nowadays used to make articles (物品)instead of wood and metal.
A.
plastics is
B.
plastics are
C.
plastic
D.
plastic are
【简答题】Nowadays, many students choose to study applied science and hard skills instead of the humanities.
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