油品罐的安全附件主要有呼吸阀、( )、阻火器、放水阀、排污阀。
A．泄压阀
B．止回阀
C．安全阀
D．报警器
参考答案：C
常导致内分泌紊乱的疾病是（）
A.脑膜瘤
B.神经纤维瘤
C.垂体微腺瘤
D.星形细胞瘤
E.海绵状血管瘤
An old soldier gave us a lecture a moment ago. In his lecture, he told us ________ in Wuxi in
the old days.
A．what everyday life was like
B．what was everyday life like
C．how everyday life was like
D．how was everyday life like
