【单选题】在日本传真地面图上,某点纬度30°,相邻等压线间隔4度纬距,若不考虑摩擦,则该点相应地转风速为:
【单选题】主要用于各种专业性安全检查或特种设备的安全性检查的检查用表是()。
【单选题】风险对照检查表主要用于风险分析程序中的()阶段。
【简答题】阅读下面短文,掌握其大意.然后从1—15各题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。 When I was about twelve years old, my mother told us that we would not be ___ 1 ___ Christmas gifts for lack of money.I felt sad and thought, “Wh...
【判断题】射线检测和超声波检测主要用于表面和近表面缺陷的检查,磁粉检测主要用于内部缺陷的检查,渗透检测用于表面开口缺陷的检查。
【多选题】When we say lack of preparation, it usually means __________ .
A.
the speaker hurriedly writes his or her presentation at the last minute
B.
the speaker doesn’t rehearse or practice the speech enough
C.
the speaker doesn’t think in advance about the kinds of questions the audience might ask