电梯导轨的作用是用来支承电梯轿厢和对重的重量.()
查看答案
GAAS80/700焊机的液压伺服阀是带有()的高精度控制阀。
You have the following requirements in relation to the detection of block corruption for your database instance: 1. Check for logical self-consistency of data blocks when modified in memory. 2. Checksums are calculated before and after the block change. 3. Checks are performed for the lost writes to the physical standby database. Which method would help you perform the above checks automatically? ()
A. Set the DB_SECUREFILE parameter to PERMITTED
B. Set the DB_ULTRA_SAFE parameter to DATA_ONLY
C. Set the DB_LOCK_CHECKSUM parameter to TYPICAL
D. Set the DB_LOST_WRITE_PROTECT parameter to TYPICAL
患儿,4岁半。麻疹后发热20余天,乏力、精神萎靡、盗汗,伴阵发性痉挛性咳嗽、气促,听诊肺部有少许干啰音,来医院进行诊治。采用下列何种治疗为宜()
A. 异烟肼+链霉素
B. 青霉素+氯霉素
C. 异烟肼+利福平
D. 异烟肼+链霉素+青霉素
E. 异烟肼+利福平+链霉素+比嗪酰胺