哪项不是甲状腺危象的诱因（）。
A.精神刺激
B.重症患者治疗不当
C.甲硫咪唑与普萘洛尔同用
D.术前准备不充分
E.治疗
参考答案：C
妥善保管车床附件，保持车床整洁、完好是数控车床的操作规程。
Don't worry. There is still _____ time. [ ]
A. little
B. a little
C. few
D. a few
