糖尿病最易发生的感染是 A．肺结核 B．皮肤化脓感染 C．败血症 D．肾盂肾炎 E．

The manager, ______his factory’s products were poor in quality, decided to give his workers further training.

A．knowing

B．known

C．to know

D．being known

— Why isn't Cathy here yet?

— She _____ to be picked up at the station. [ ]

A. could wait

B. must wait

C. might be waiting

D. can be waiting

进行初步可行性研究时，投资估算方法采用( )。

A．指标估算法

B．逐项估算法

C．参照类似项目套算

D．总价估算法

货物存放的状态不同，其装卸搬运难易程度即装卸搬运活性指数也不一样。装箱并搁在托盘上的货物的活性指数为()。

A.0

B.1

C.2

D.4

森林立地主导因子