Under normal conditions, the quantity of air circulation becomes less and lessWhat is the

Under manoeuvring condition the main engine may run on _____.

When under maneouvring conditions with the machinery being manually operated the control u

While sailing under normal weather and sea condition, the basic parameter which is used to

听力原文： Under normal conditions the act of communication requires the presence of at lea

Which of the following conditions can cause above normal air temperature to develop in the

Under what condition will the strike be called off？A．The gold companies meeting the miners