【简答题】已知某金属X有下列相关信息: ①它的主要矿物的化学成分是X 2 O 3 ; ②它主要通过热还原法冶炼而成; ③它的年产量位于金属之首. (1)据此推断X是 _________ (填选项字母). A.钛 B.铁 C.铝 D.铜 (2)在高炉中用含X 2 O 3 的矿物冶炼该金属的原理是 _________ (用化学方程式表示). (3)电化学腐蚀是金属腐蚀的主要原...
【简答题】A. Summer vacation is coming . B. It's a good plan. C. I'll take a summer intership. D. It's a hot summer. 6. A. I improved my communication skills. B. I study Computer Science. C. I wish you coul...
【单选题】Your education will ________ you to earn a good living. Work hard from now on.
【单选题】用电子胎心监护仪监测胎心率时,提示胎儿缺氧的指标是
【单选题】混合有多种形式下列不属于主要形式的是()。
【简答题】Some students from a vocational school will go to the Xingfu Community this Saturday. They will do some 1. _______ ( 志愿者 ) work for the residents ( 居民 ) there. They will put up the 2. _________ (post)...
【单选题】用胎儿电子监护仪监测胎心率,提示胎儿缺氧的指标是
【单选题】用胎儿电子监护仪监测胎心率,提示胎儿缺氧的指标是:
E.
胎心基线率在 110 ~ 115 次 / 分
【单选题】用胎儿电子监护仪监测胎心率,提示胎儿缺氧的指标是:
【简答题】将下列句子变成被动语态 1. They will finish the work in two days. 2. The teacher asked us a lot of questions. 3. All the students like the new math teacher. 4. We teach English in many schools. 5. I will give him...