有18名同学去划船，每条船可以坐4人，每个同学都参加一共要租（ ）条船． A．4B 发布时间：2017-05-16 15:41 │ 来源：www.tikuol.com 题型：选择题 问题： 有18名同学去划船，每条船可以坐4人，每个同学都参加一共要租（ ）条船．A．4B．5C．6
题型：选择题 准同步并列的方法是，发电机并列合闸前（），将发电机断路器合闸，完成并列操作。A.未加励磁，当发电机电压与并列点系统侧电压的幅值、频率、相位接近相等时B.未加励磁，当发电机转速接近同步转速时C.已加励磁，当发电机电压与并列点系统侧电压的幅值、频率、相位接近相等时D.已加励磁，当发电机转速接近同步转速时 查看答案
题型：选择题 Directions: For each blank in the following passage, there are four choices marked A, B, C and D. Choose the one that is most suitable and write down the corresponding letter. What do we mean by a perfect English pronunciation In one sense there are as many different kinds of English as there are speakers of it. (21) two speakers speak in exactly the same (22) . We can always hear differences (23) them, and the pronunciation of English (24) a great deal in different geographical (25) . How do we decide what sort of English to use as a (26) This is not a question that can be (27) in the same way for all foreign learners of English. (28) you live in a part of the world like India or West Africa, where there is a long (29) of speaking English for general communication purposes, you should tend to acquire a good variety of the pronunciation of this area. It would be a (30) in these circumstances to use as a model BBC English or (31) of the sort. On the other hand, if you live in a country (32) there is no traditional use of English, you must take (33) your model some form of practical English pronunciation. It does not care very much which form you choose. The most (34) way is to take as your model the sort of English you can (35) most often.A．listenB．hearC．noticeD．find 查看答案